Question

bob of a simple pendulum is made of a wooden sphere of mass m. Now the bob is replaced by an iron ball of same dimension but mass 2 m. How will the time period of pendulum change?

a. increase
b. decrease
c. remains same
d. first increase then decrease​

Answer 1

Answer:

Answer is C : remains same

Explanation:

The time period of a simple pendulum is equal to

T= 2π √(l/g)

The time period depends only on the length of the pendulum and the acceleration due to gravity at that place. So by changing the mass the time period will not be changed.

Thus the time period remains the same.

Answer 2

Answer:

(c) remains same

Explanation:

We know the formula of time period: T=2π$\sqrt{\frac{l}{g}}$ where 'l' is the length of the pendulum and 'g' is acceleration due to gravity. As there is no role of mass here hence the time period remains same.