NDA2019General AbilityGeneral ScienceActual
A pendulum clock is lifted to a height where the gravitational acceleration has a certain value g. Another pendulum clock of same length but of double the mass of the bob is lifted to another height where the gravitational acceleration is g / 2 . The time period of the second pendulum would be: (in terms of period T of the first pendulum)
Options
- A2 ~T
- B1 2 ~T
- C2 2 ~T
- DT
Correct answer
A. 2 ~T
Step-by-step solution
T is inversely proportional to sqrt (g) and independent on mass, hence in this case it will be sqrt (2) T .