Question

A sphere of mass 100 gram is rotated at uniform angular velocity 2rads-
along a circle of radius 1.25 m in horizontal plane with help of light horizontal
string. The tension in the string is
1) 0.25N
2) 0.5N
3) 2.5N
4) 5N​

Answer 1

Answer:

Option 2)0.5 N

Explanation:

Tension in the string= mass* acceleration

T=$m {w}^{2} r$ (where w= angular velocity)

= 0.1*2*2*1.25 =0.5N