Question

105. a 100kg body is slowly lowered from a height of 20 m using a rope of brealing strength of 800n the max aceleration with which it can be lowered without breaking the rope is

Answer 1

Explanation:

Tension T in the cord is

100g−T=100a

acceleration should be such that the resultant force do not cross 60g N

100g−60g=100a

400=100a

a=4m/s

2

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