Question: A rope with two mass-less platforms at its two ends passes over a fixed pulley, as shown in the figure. Discs with narrow slots and an equal weight of 20 N each can be placed on the platforms. The number of discs placed on the left-side platform is n, and that on the right-side platform is m. It is found that for n = 5 and m = 0, a force F= 200 N (refer to part (i) of the figure) is sufficient to initiate upward movement of the left side platform. If the force F is removed, Find the minimum value of m (refer to part (ii) of the figure) required to prevent the downward motion of the left side platform. (in integer).

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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Question: A rope with two mass-less platforms at its two ends passes over a fixed pulley, as shown
in the figure. Discs with narrow slots and an equal weight of 20 N each can be placed on the
platforms. The number of discs placed on the left-side platform is n, and that on the right-side
platform is m. It is found that for n = 5 and m = 0, a force F= 200 N (refer to part (i) of the figure) is
sufficient to initiate upward movement of the left side platform. If the force F is removed, Find the
minimum value of m (refer to part (ii) of the figure) required to prevent the downward motion of
the left side platform. (in integer).
n disc
Fixed pulley
Mass-less platforms
n disc
Fixed pulley
m disc
Mass-less platforms
Transcribed Image Text:Question: A rope with two mass-less platforms at its two ends passes over a fixed pulley, as shown in the figure. Discs with narrow slots and an equal weight of 20 N each can be placed on the platforms. The number of discs placed on the left-side platform is n, and that on the right-side platform is m. It is found that for n = 5 and m = 0, a force F= 200 N (refer to part (i) of the figure) is sufficient to initiate upward movement of the left side platform. If the force F is removed, Find the minimum value of m (refer to part (ii) of the figure) required to prevent the downward motion of the left side platform. (in integer). n disc Fixed pulley Mass-less platforms n disc Fixed pulley m disc Mass-less platforms
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