Question

59.
Figure shows an arrangement of pulleys designed to facilitate the lifting of a
heavy load W. Assume that the friction can be neglected everywhere and
that the lower two pulleys to which the load attached weighs a total of 20N.
An 840 N load is to be raised, find the minimum force F that can lift load is
Ans. 215N​

Answer 1

Answer:

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Explanation:

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