Q)
(chatquestion)...cases.
In the arrangement shown in Fig. 1.17. the mass of the rod
Mexceeds the mass m of the ball. The ball has an opening
permitting it to slide along the thread with some friction.
The mass of the pulley and the friction in its axle are
negligible. At the initial moment the ball was located
opposite the lower end of the rod. When set free, both
bodies began moving with constant accelerations. Find
the friction force between the ball and the thread it t
seconds after the beginning of motion the ball got opposite the upper
end of the rod. The rod length equals l.
Fig. 1.17
40 the mnss of ball
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