Question

Could you do question C both parts i and ii?

Pulley This problem revisits the "falling-spools experiment" from the tutorial Dynamics of rigid bodies. The apparatus shown at right consists of two identical spools connected by an inextensible thread of negligible inertia that runs over an ideal pulley. The thread is wrapped around spool A many times, but it is attached to a fixed point on spool B, so that spool B will not rotate. The spools are released from rest from the same height at the same instant. Thread A a. In tutorial, you observed the motion of the spools after they were released. Ignoring small differences in their motions: • In which direction did each spool move? Floor

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Answer 1

Join: nitially. Spool A . Spool B and pulley have gravitational pot. energy cuith respect to Earth. As system releases, this gravitational pol. energy Starts getting converted into Kinetic Energy which includes translational Kinetic energy g spool A and B and rotational Kine lie energy of spools A, B and pulley. So, Total Energy remains constant Only it is getting converted to other formi. pii). Ugoan, A = 91 Initial, V-95 Finally, yy=0J , Kg = 45 (Toonela honel KE) Joora conlerovahon gj Energy: U;= y + ky tkr 9 = 0+u+kR RR-5T - Rotational Ke of spool M.