Question

a sphere is accelerated upwards by acord whose breaking strength is four times itS weight .the maximum acceleration with which the sphere can move up without breaking the cord is

Answer 1

Answer:

The maximum acceleration  with which the sphere can move up without breaking the cord is 3g

Explanation:

The tension in the cord will be the highest when the sphere is in the top position

If the centripetal acceleration is a and the mass of the  sphere m

T = mg + ma

Given

T = 4mg

Thus,

4mg = mg + ma

or, a = 3g

Thus, the cord will break when the acceleration is 3 times the acceleration due to gravity.

Hope the answer is helpful.