Question

7. A ball of mass 2.5 kg is attached to one end of a string
whose other end is attached to the ceiling of a room. The
ball rotates in a horizontal circular path such that the
string makes an angle 45° with vertical. If the distance
from the center of circle to the ceilling is 2.5 m, then
find :
(i) Linear velocity of ball,
(ii) Tension in the string,
(iii) Time period of conical pendulum.
(g = 10 m/s2)​

Answer 1

Explanation:

Correct option is

D

36

We have,

Tsinθ=mrω

2

But,

sinθ=

L

r

∴T=mLω

2

∴324=0.5×0.5×ω

2

∴ω=36 rad/s