College Physics
1st Edition
ISBN: 9781938168000
Author: Paul Peter Urone, Roger Hinrichs
Publisher: OpenStax College
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Chapter 5, Problem 14PE
Calculate the maximum acceleration of a car that is heading up a 4° slope (one that makes an angle of 4° with the horizontal) under the following road conditions. Assume that only half the weight of the car is supported by the two drive wheels and that the coefficient of static friction is involved that—is, the tires are not allowed to slip during the acceleration. (Ignore rolling.) (a) On dry concrete. (b) On wet concrete. (c) On ice, assuming that
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Calculate the maximum acceleration of a car that is heading up a 4º slope (one that makes an angle of 4º with the horizontal) under the following road conditions. Assume that only half the weight of the car is supported by the two drive wheels and that the coefficient of static friction is involved—that is, the tires are not allowed to slip during the acceleration. (Ignore rolling.) (a) On dry concrete. (b) On wet concrete. (c) On ice, assuming that μs = 0.100, the same as for shoes on ice.
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Chapter 5 Solutions
College Physics
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- Show that the acceleration of any object down an incline where friction behaves simply (that is, where fk=kN ) is a=g(sinkcos). Note that the acceleration is independent of mass and reduces to the expression found in the previous problem when friction becomes negligibly small (k=0).arrow_forwardPart of riding a bicycle involves leaning at the correct angle when making a turn. To be in equilibrium the total force exerted by the ground must be on a line through the center of gravity (CG) of the bicycle and rider, as indicated on the figure below. Turns on ice are much more difficult to negotiate than turns on concrete. What is the minimum coefficient of static friction required for a person with mass of 75 kg to negotiate the curve at a velocity of 8.0 m/s and with a turn radius of 25.0 m?arrow_forward8) Calculate the maximum acceleration of a car that is heading up a 4.00° slope (one that makes an angle of 4.00* with the horizontal) under the following road conditions. Assume that only half the weight of the car is supported by the two drive wheels and that the coefficient of static friction is involved-that is, the tires are not allowed to slip during the acceleration. (Ignore rolling.) (a) On dry concrete with ¼4; = 0.950. (b) On ice with #s = 0.100.arrow_forward
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- Gdarrow_forwardA car making a turn on a dry, banked highway ramp is experiencing friction. The angle of the bank is 40 degrees and the radius of turn is 78 m, what is the coefficient of static friction between the tires and the road if a 1350 kg car safely turn at 45m/s?arrow_forwardDetermine the force Prequired to force the 11° wedge under the 76-kg uniform crate which rests against the small stop at A. The coefficient of friction for all surfaces is 0.30. 2.3 m 1.2 m 76 kg A 1 11° Answer: P =arrow_forward
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