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(Solved): (2) [12 Points] Consider an experiment in which a toy car (mass \( 300 \mathrm{~g} \) ) rolls along ...




(2) [12 Points] Consider an experiment in which a toy car (mass \( 300 \mathrm{~g} \) ) rolls along the track shown in the di
2b) Now suppose that the track were not frictionless, with the coefficient of kinetic friction \( \angle k \) being the same
(2) [12 Points] Consider an experiment in which a toy car (mass \( 300 \mathrm{~g} \) ) rolls along the track shown in the diagram. The left-hand slope is not as steep as the right-hand slope. Points \( P \) and \( R \) are located \( 0.8 \mathrm{~m} \) above the bottom \( ( \) point \( Q) \). 2a)Suppose that the track were frictionless. 2b) Now suppose that the track were not frictionless, with the coefficient of kinetic friction \( \angle k \) being the same on both the left-hand and right-hand slopes. i. [2 points] In order for the car to feel as small a frictional force as possible as it moves downhill, would you release it (a) at point \( P \), (b) at point \( R \), or (c) would it be the same in either case? Explain. ii.[4 points] If the toy car were pleased from rest at point \( P \) and had a speed of \( v_{0}=\underline{3.2 \mathrm{~m} / \mathrm{s}} \) at point \( Q \), calculate the amount of work done on the car by friction between points \( P \) and \( Q \). Show all work.


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if we consider an object of mass m moving down along a inclined plane having inclination ? the frictional forc
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