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tanyak680Lv1
6 Oct 2020
Textbook Problem
Review. A string is wound around a uniform disk of radius R and mass M. The disk is released from rest with the string vertical and its top-end tied to a fixed bar (Fig. P10.41). Show that
(a) the tension in the string is one-third of the weight of the disk,
(b) the magnitude of the acceleration of the center of mass is 2g/3, and
(c) the speed of the center of mass is (4gh/3)1/2 after the disk has descended through distance h.
(d) Verify your answer to part (c) using the energy approach.
Figure P10.41
Textbook Problem
Review. A string is wound around a uniform disk of radius R and mass M. The disk is released from rest with the string vertical and its top-end tied to a fixed bar (Fig. P10.41). Show that
(a) the tension in the string is one-third of the weight of the disk,
(b) the magnitude of the acceleration of the center of mass is 2g/3, and
(c) the speed of the center of mass is (4gh/3)1/2 after the disk has descended through distance h.
(d) Verify your answer to part (c) using the energy approach.
Figure P10.41
PriyankaLv10
8 Mar 2021
