A spool of thread consists of a cylinder of radius R1 withend caps of radius R2 as
Chapter 10, Problem 91(choose chapter or problem)
A spool of thread consists of a cylinder of radius R1 withend caps of radius R2 as depicted in the end view shownin Figure P10.91. The mass of the spool, including thethread, is m, and its moment of inertia about an axisthrough its center is I. The spool is placed on a rough,horizontal surface so that it rolls without slipping whena force TSacting to the right is applied to the free endof the thread. (a) Show that the magnitude of the frictionforce exerted by the surface on the spool is given byf 5 aI 1 mR1R 2I 1 mR 22 bT(b) Determine the direction of the force of friction.
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