A stone tied to a rope is rotated in a vertical circle with uniform speed. If the difference between the maximum and minimum tensions in the rope is 20 N, mass of the stone in kg is (take, g= 10 `ms^(-2)`)

Options

A. `0.75`
B. `1.0`
C. `1.5`
D. `0.5`

Answer

B

Explanation

We know that the difference between the maximum and minimum tensions in the rope
`T_(max)-T_(min)=2mg`
Here, `T_(max)-T_(min)=20`
Now, mass of the store F = ma
`m=(F)/(a)=(20)/(2xx10)=1kg`