Question

i) if mass of the body is 100 gm, radius is 60 cm, find tension in the string at lower, mid and
higher point.​

Answer 1

Explanation:

Correct option is

D

87.64N

Given : m=100g=0.1kg R=2 m

Frequency of revolution f=200 rpm =

60

200

=3.33 rps

Angular velocity w=2πf=2π(3.33)=20.9 rad/s

∴ Maximum tension in the string T=mRw

2

=0.1×2×(20.9)

2

≈87.64N