Banked Curve ITEMS SHOWN INCLUDE THOSE AVAILABLE ON EBAY:

AFX 12 Banked Curve Track HO Slot Car 70625
AFX 12 Banked Curve Track HO Slot Car 70625
$24.59
Time Remaining: 5d 13h 55m
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AFX Banked Curve 9 Radius HO Slot Car Track Sections 70622
AFX Banked Curve 9 Radius HO Slot Car Track Sections 70622
$17.69
Time Remaining: 12d 14h 47m
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Latest AFX70625 12 Banked Curve HO Scale Slot Car Track
Latest AFX70625 12 Banked Curve HO Scale Slot Car Track
$23.75
Time Remaining: 6d 15h 42m
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Tyco track banked curve
Tyco track banked curve
$3.69 (1 Bid)
Time Remaining: 3d 19h 23m
AFX 9 Banked Curve 1 8circle 503351 Set Of 4
AFX 9 Banked Curve 1 8circle 503351 Set Of 4
$19.00
Time Remaining: 6d 21h 27m
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AFX 9 Banked Curve Track HO Slot Car 70622
AFX 9 Banked Curve Track HO Slot Car 70622
$21.95
Time Remaining: 17d 14h 36m
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AFX Racemasters Track Banked Curve 9 R Set AFX70622
AFX Racemasters Track Banked Curve 9 R Set AFX70622
$19.99
Time Remaining: 13d 8h 48m
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Old Aurora AFX Model Motoring Banked S Curve HAIRPIN CURVED Track No 2543
Old Aurora AFX Model Motoring Banked S Curve HAIRPIN CURVED Track No 2543
$19.99
Time Remaining: 13d 6h 59m
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Latest AFX70622 9 Banked Curve 1 8 6 HO Scale Slot Car Track
Latest AFX70622 9 Banked Curve 1 8 6 HO Scale Slot Car Track
$17.75
Time Remaining: 26d 10h 33m
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AURORA AFX BANKED CURVE SUPPORTS FOR DAYTONA  MONZA WORKS W TOMY SET OF 42
AURORA AFX BANKED CURVE SUPPORTS FOR DAYTONA MONZA WORKS W TOMY SET OF 42
$14.99
Time Remaining: 18d 21h 35m
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AURORA AFX 12 INCH BANKED CURVE NEW IN PACK 2545 CA 1971
AURORA AFX 12 INCH BANKED CURVE NEW IN PACK 2545 CA 1971
$29.99
Time Remaining: 18d 15h 22m
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AURORA TOMY AFX 12 1 8R BANKED CURVES MIB 1989
AURORA TOMY AFX 12 1 8R BANKED CURVES MIB 1989
$19.99
Time Remaining: 3d 9h 49m
48 Tyco HO Slot Car Banked  Flat Curve Tracks 9 12 Rad 1 8 1 4 Circle
48 Tyco HO Slot Car Banked Flat Curve Tracks 9 12 Rad 1 8 1 4 Circle
$49.99
Time Remaining: 12d 3h 20m
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Life Like Track lot NASCAR 88  04 Runs great Banked Curves
Life Like Track lot NASCAR 88 04 Runs great Banked Curves
$35.00
Time Remaining: 21d 12h 34m
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AW AFX TOMY 18 INCH BANKED CURVES 4 PIECES TOTAL NEW NEVER BEEN USED TRACK HO
AW AFX TOMY 18 INCH BANKED CURVES 4 PIECES TOTAL NEW NEVER BEEN USED TRACK HO
$29.99
Time Remaining: 25d 6h 31m
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1998 TYCO HO Slot Car Hi Bank BANKED CURVE TRACK Add On +2 15 Straights 37587
1998 TYCO HO Slot Car Hi Bank BANKED CURVE TRACK Add On +2 15 Straights 37587
$19.99
Time Remaining: 8d 15h 59m
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1980 Bachmann 1 32 Supertrax Slot Car HI BANKED CURVE TRACK Boxed +LockLugs 6015
1980 Bachmann 1 32 Supertrax Slot Car HI BANKED CURVE TRACK Boxed +LockLugs 6015
$19.99
Time Remaining: 3d 12h 30m
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LIFE LIKE 12 INCH BANKED CURVE 4 12 INCH CURVES WITH 3 CURVE CLIPS
LIFE LIKE 12 INCH BANKED CURVE 4 12 INCH CURVES WITH 3 CURVE CLIPS
$20.98
Time Remaining: 10d 20h 46m
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Vintage Tyco Banked Curve B5852 6 4 pieces
Vintage Tyco Banked Curve B5852 6 4 pieces
$7.99
Time Remaining: 20d 14h 43m
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AFX 70622 HO Slot Car Track 9 Radius Banked Curve
AFX 70622 HO Slot Car Track 9 Radius Banked Curve
$23.79
Time Remaining: 9d 3h 58m
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Lot of 8 Tyco new style Banked Curve Pieces Enough To Make 2 Banked Curves
Lot of 8 Tyco new style Banked Curve Pieces Enough To Make 2 Banked Curves
$5.99
Time Remaining: 3d 22h 24m
AURORA AFX DAYTONA 4 LANE HIGH BANKED CURVE SET W SUPPORTS  HRDW EXC COND
AURORA AFX DAYTONA 4 LANE HIGH BANKED CURVE SET W SUPPORTS HRDW EXC COND
$39.99
Time Remaining: 15d 21h 55m
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AFX 12 Banked Curve Track 6 AFX70625
AFX 12 Banked Curve Track 6 AFX70625
$29.99
Time Remaining: 19d 12h 37m
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4 Tyco 9 Radius Banked Curve Track Sections In Good Condition Free S
4 Tyco 9 Radius Banked Curve Track Sections In Good Condition Free S
$16.95
Time Remaining: 1d 9h 4m
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AFX HO 12 Radius Banked Curve Track HO Scale Slot Car Track 70625
AFX HO 12 Radius Banked Curve Track HO Scale Slot Car Track 70625
$31.16
Time Remaining: 26d 8h 57m
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New TYCO HO Slot Car Hi Bank BANKED CURVE TRACK +2 15 Straights 37587
New TYCO HO Slot Car Hi Bank BANKED CURVE TRACK +2 15 Straights 37587
$27.49
Time Remaining: 23d 19h 8m
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4pc AMRAC Slot Car 12 BANKED CURVE Tracks Rare Card 1211 GREAT Bank Life Like
4pc AMRAC Slot Car 12 BANKED CURVE Tracks Rare Card 1211 GREAT Bank Life Like
$24.99
Time Remaining: 13d 18h 42m
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72 Aurora AFX Model Motoring Rally Bank Race Set Super Banked Hairpin Curve 2544
72 Aurora AFX Model Motoring Rally Bank Race Set Super Banked Hairpin Curve 2544
$4.99
Time Remaining: 4d 22h 11m
1998 TYCO MATTEL Slot Car HI BANKED CORKSCREW Spirale Curve Track 37676 NewInBox
1998 TYCO MATTEL Slot Car HI BANKED CORKSCREW Spirale Curve Track 37676 NewInBox
$25.99
Time Remaining: 24d 11h 53m
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Tyco Mattel slot car track Banked Curve B5852 Set Of 4
Tyco Mattel slot car track Banked Curve B5852 Set Of 4
$5.00
Time Remaining: 1d 19h 23m
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AURORA AFX BANKED S CURVE PAIR BROKEN TABS W REPAIR CLIPS INCLUDED CLEAN
AURORA AFX BANKED S CURVE PAIR BROKEN TABS W REPAIR CLIPS INCLUDED CLEAN
$19.99
Time Remaining: 8d 17h 23m
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TYCO BANKED CURVES LOT OF FOUR NO BROKEN TABS POLISHED RAILS TRACK READY
TYCO BANKED CURVES LOT OF FOUR NO BROKEN TABS POLISHED RAILS TRACK READY
$11.00
Time Remaining: 24d 4h 31m
Buy It Now for only: $11.00
Lot of 9 Tyco Ho slot car banked curve tracks
Lot of 9 Tyco Ho slot car banked curve tracks
$7.99
Time Remaining: 1d 17h 31m
Banked Curve 12 Radius HO Slot Car Track Sections 70625
Banked Curve 12 Radius HO Slot Car Track Sections 70625
$36.28
Time Remaining: 19d 5h 7m
Buy It Now for only: $36.28
4 Tyco Black 9 Radius Banked Curve Track Sections Vintage
4 Tyco Black 9 Radius Banked Curve Track Sections Vintage
$6.99
Time Remaining: 20d 17h 52m
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1979 TYCO Slot Car HO Electric Racing Hi Banked Curve Corkscrew Set Vintage Lot
1979 TYCO Slot Car HO Electric Racing Hi Banked Curve Corkscrew Set Vintage Lot
$59.99
Time Remaining: 11d 21h 16m
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Vtg Eldon Banked Curve Supports 3875 Lot w Manual Papers Accessories Order Form
Vtg Eldon Banked Curve Supports 3875 Lot w Manual Papers Accessories Order Form
$19.95
Time Remaining: 3d 19h 17m
Tyco Slot Car HO Scale Banked Curve Track B5847 B 5847 Lot of 2
Tyco Slot Car HO Scale Banked Curve Track B5847 B 5847 Lot of 2
$9.65
Time Remaining: 25d 15h 30m
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2 AFX Daytona 12 Inch Radius Banked 1 4 Curves with 4 Supports Unused with Box
2 AFX Daytona 12 Inch Radius Banked 1 4 Curves with 4 Supports Unused with Box
$59.99
Time Remaining: 27d 18h 16m
Buy It Now for only: $59.99
1988 TYCO Slot Car HI BANKED CORKSCREW CURVES 6738 Sealed New in Box
1988 TYCO Slot Car HI BANKED CORKSCREW CURVES 6738 Sealed New in Box
$24.99
Time Remaining: 23d 11h 15m
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Lot Life Like HO Scale Slot Car Track 15 9 Straight 9 Curve 12 Banked
Lot Life Like HO Scale Slot Car Track 15 9 Straight 9 Curve 12 Banked
$29.99
Time Remaining: 12d 9h 29m
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AFX AURORA 12 Radius Daytona Banked Curve 1 2 Circle 1973 Bank Complete Rare
AFX AURORA 12 Radius Daytona Banked Curve 1 2 Circle 1973 Bank Complete Rare
$48.95
Time Remaining: 23d 10h 45m
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Vintage 1972 Aurora xlerators 15 radius banked curve center section  2720201
Vintage 1972 Aurora xlerators 15 radius banked curve center section 2720201
$16.99
Time Remaining: 18d 8h 9m
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1988 TYCO Slot Car HI BANKED CORKSCREW CURVES 6738 Sealed New in Box ROUGH Box
1988 TYCO Slot Car HI BANKED CORKSCREW CURVES 6738 Sealed New in Box ROUGH Box
$23.99
Time Remaining: 23d 12h 34m
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Lot of 32 Guard Rails Life Like HO Slot Track Like Like Banked Curve
Lot of 32 Guard Rails Life Like HO Slot Track Like Like Banked Curve
$14.99
Time Remaining: 2d 19h 41m
Buy It Now for only: $14.99
9 R Banked Curves 2 Track AFX Tomy Racemasters Track AFX 8668
9 R Banked Curves 2 Track AFX Tomy Racemasters Track AFX 8668
$15.99
Time Remaining: 19d 15h 5m
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4 TYCO HO Slot 1 8 9 Banked Curve Tracks OK USED 5852
4 TYCO HO Slot 1 8 9 Banked Curve Tracks OK USED 5852
$9.99
Time Remaining: 7d 10h 29m
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9 R Banked Curves  2 15 Straight Track AFX Tomy Racemasters Track AFX70622
9 R Banked Curves 2 15 Straight Track AFX Tomy Racemasters Track AFX70622
$32.99
Time Remaining: 25d 13h 35m
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Lot of 16 pcs SCALEXTRIC 1 32 Track Curves+ 2 Crossovers Banked Curves
Lot of 16 pcs SCALEXTRIC 1 32 Track Curves+ 2 Crossovers Banked Curves
$40.00
Time Remaining: 5d 10h 46m
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LIFE LIKE 9 1 8 BANKED CURVES ROKAR 4 PC NOS RARE TRACKS CLEAN
LIFE LIKE 9 1 8 BANKED CURVES ROKAR 4 PC NOS RARE TRACKS CLEAN
$19.99
Time Remaining: 6d 19h 5m
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1988 TYCO Slot Car HI BANKED CORKSCREW CURVES 6738 in Box ROUGH Box
1988 TYCO Slot Car HI BANKED CORKSCREW CURVES 6738 in Box ROUGH Box
$12.49
Time Remaining: 22d 17h 1m
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NEW AFX 9 Banked Curve 1 8 6 70622
NEW AFX 9 Banked Curve 1 8 6 70622
$19.99
Time Remaining: 17d 13h
Buy It Now for only: $19.99
SCX Digital Banked Curve
SCX Digital Banked Curve
$35.00
Time Remaining: 20d 18h 32m
Buy It Now for only: $35.00
16 TYCO HO Slot 1 8 9 Banked Curve Tracks OK used B5847 black see photos Estate
16 TYCO HO Slot 1 8 9 Banked Curve Tracks OK used B5847 black see photos Estate
$16.49
Time Remaining: 8d 13h 42m
4pc TYCO HO Slot Car 1 8 radius 9 BANKED CURVE TRACKS Fast Add On Unused 5852
4pc TYCO HO Slot Car 1 8 radius 9 BANKED CURVE TRACKS Fast Add On Unused 5852
$11.99
Time Remaining: 27d 11h 56m
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Large Lot Life Like HO Scale Slot Car Track Straight Curve Banked New
Large Lot Life Like HO Scale Slot Car Track Straight Curve Banked New
$47.99
Time Remaining: 12d 9h 40m
Buy It Now for only: $47.99
Vintage 1972 Aurora xlerators 15 radius banked curve ENTRANCE section
Vintage 1972 Aurora xlerators 15 radius banked curve ENTRANCE section
$16.99
Time Remaining: 18d 8h 17m
Buy It Now for only: $16.99
Life Like HO Slot Car Track Curves Banked Criss Cross Snake Large Lot
Life Like HO Slot Car Track Curves Banked Criss Cross Snake Large Lot
$53.99
Time Remaining: 19d 13h 54m
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AFX 70625 12 Banked Curve Track 6 HO Scale Slot Car Track
AFX 70625 12 Banked Curve Track 6 HO Scale Slot Car Track
$23.95
Time Remaining: 7d 17h 40m
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Lot of 5 Marchon Racing MR 1 30 degree Banked Curve
Lot of 5 Marchon Racing MR 1 30 degree Banked Curve
$5.99
Time Remaining: 23h 27m
Buy It Now for only: $5.99

« Previous12

Banked+Curve

Forex trading

 

Normal 0

No sane person would jump into the forex market blindly. You might as well set your money on fire if that’s what you’re going to do. Sensible investors study the market carefully first, learn the ins and outs of currency trading -- and even then, before they launch into it, they devise a smart forex trading strategy.

The market is constantly changing and is not always predictable, true. But you still require a scheme, one that provides for unknowns and surprises.

Your strategy should begin with how much money you can afford to lose. That may sound like a negative outlook -- after all, the goal is to MAKE money, not lose it -- but common sense tells you that the forex market is a gamble. There are precautions you can take that will make you less likely to lose your initial investment, but there’s no way to guarantee it. Your strategy must provide the possible action that you will take a bath, and for that cause you should never invest more than you are able to afford to lose.

Another good tip for your forex trading strategy is to avoid putting all your investments in one currency. What’s the old saying about eggs and baskets? Yeah, don’t put ‘em all in one. Spreading them out makes it much, much less likely that you’ll be wiped out, the way you would if you relied on one currency and it bottomed out.

As you develop your trading strategy, make yourself mindful of what the market is behaving like right now. Is it trending upward, or downward? What’s the general mood among traders? They all have a strategy, too, and are eager to know what others are thinking.

Consider also what your timeline is. How long do you want to stay in the market before taking your profits and getting out?

Your strategy must also involve learning the timing of the business. Timing is everything: Too late or too early and your potential profit evaporates. As you learn to gauge the market and make trades at just the right time, your profits will increase. A good strategy will factor in this learning curve and allow for a few mistakes at first.

Above all, to prepared to accept surprises when it comes to forex trading. Strategy can only get you so far. The rest is ingenuity and a little bit of luck.

Circular Motion - Cyclist on banked curve

acceleration around a banked curve?

A curve of radius 64m is banked for a design speed of 84km/hr . If the coefficient of static friction is 0.28 (wet pavement), at what range of speeds can a car safely make the curve? Consider the direction of the friction force when the car goes too slow or too fast.

Recall the following pair of equations from my earlier analysis:
N*cos(theta) = m*g + F*sin(theta)
N*sin(theta) + F*cos(theta) = m*v_max^2/r

These equations correspond to the situation of maximum speed of travel.

Substitute F = mu_s*N for maximum deliverable traction force:
N*cos(theta) = m*g + mu_s*N*sin(theta)
N*(sin(theta) + mu_s*cos(theta)) = m*v_max^2/r

Solve for N:
N*(cos(theta) - mu_s*sin(theta)) = m*g

Thus:
N = m*g/(cos(theta) - mu_s*sin(theta))

Substitute:
m*v_max^2/r = m*g*(sin(theta) + mu_s*cos(theta))/(cos(theta) - mu_s*sin(theta))

Cancel dependence on m:
v_max^2/r = g*(sin(theta) + mu_s*cos(theta))/(cos(theta) - mu_s*sin(theta))

Solve for v_max:
v_max = sqrt(r*g*(sin(theta) + mu_s*cos(theta))/(cos(theta) - mu_s*sin(theta)) )

- - - - - - - - - - - - - -
For minimum speed of travel, friction acts in the opposite direction (up along the asphalt):
N*cos(theta) = m*g - F*sin(theta)
N*sin(theta) - F*cos(theta) = m*v_min^2/r

Perform similar algebra to eventually solve for v_min:
(CAUTION: N and F are not the same as in the maximum speed case)
N*cos(theta) = m*g - mu_s*N*sin(theta)
N*(sin(theta) - mu_s*cos(theta)) = m*v_min^2/r

N*(cos(theta) + mu_s*sin(theta)) = m*g
N = m*g/(cos(theta) + mu_s*sin(theta))

m*g*(sin(theta) - mu_s*cos(theta))/(cos(theta) + mu_s*sin(theta)) = m*v_min^2/r
g*(sin(theta) - mu_s*cos(theta))/(cos(theta) + mu_s*sin(theta)) = v_min^2/r

v_min = sqrt(r*g*(sin(theta) - mu_s*cos(theta))/(cos(theta) + mu_s*sin(theta)) )

Summary:
v_max = sqrt(r*g*(sin(theta) + mu_s*cos(theta))/(cos(theta) - mu_s*sin(theta)) )
v_min = sqrt(r*g*(sin(theta) - mu_s*cos(theta))/(cos(theta) + mu_s*sin(theta)) )

Note: if you end up with an imaginary number or zero for v_min, it means that all speeds are safe.
If you end up with an imaginary number or zero for v_max, it means that no speed is safe.

What is theta? Well, recall the formula for the design of banking angle we derived in the other problem:
theta = arctan(v_proper^2/(r*g))

Substitute this in to each formula for maximum and minimum speed, and do much simplification:
v_max = sqrt(r*g*(v_proper^2 + mu_s*r*g)/(r*g - mu_s*v_proper^2))
v_min = sqrt(r*g*(v_proper^2 - mu_s*r*g)/(r*g + mu_s*v_proper^2))

Data (notice the unit conversion):
v_proper:=70/3 m/s; g:=9.8 N/kg; r:=64 m; mu_s:=0.28;

Results:
v_max = 30.84 meters/second
v_min = 17.23 meters/second

And if you prefer kilometers/hour, simply translate:
v_max = 111 km/hr
v_min = 62.1 km/hr

We have to round in the interest of safety.