Question

If the length of a pendulum is made 9 times and mass of the bob is made 4 times, then the value of time period becomes –

• A. 3T
• B. 3/2T
• C. 4T
• D. 2T

Answer 1

Answer: (A)

3T

Answer 2

Time period does not depend on mass.

T µ $\sqrt { \ell }$ …(1), T¢ µ $\sqrt { 9 \ell }$ …(2) Ž T¢ = 3T