A string is wrapped around a thin-walled cylinder pulley of radius 11 cm and mass of 12.6 kg. If the string is pulled by a force that is tangent to a point on the rim of the pulley, how much force is exerted to cause it to rotate at a constant rate of 4.55 rad/s'? The moment of inertia for thin-walled cylinder is I = mr². 6.31 N O 0.694 N O 57.3 N O 521 N Clear my choice

23. A car traveling on a flat (unbanked), circular track w accelerates uniformly from rest with a tangential accel- eration of 1.70 m/s². The car makes it one-quarter of the way around the circle before it skids off the track. From these data, determine the coefficient of static friction between the car and the track.

45. 143 m/s

15.13

how did you get 7.68

6

9- Please I want answers of sub-part (a) by typing it. Many Thanks