Gravitation Ques 20
20. In a rocket a seconds pendulum is mounted. Its period of oscillation decreases when the rocket
[1991]
(a) comes down with uniform acceleration
(b) moves round the earth in a geostationary orbit
(c) moves up with a uniform velocity
(d) moves up with uniform acceleration
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Answer:
Correct Answer: 20.(d)
Solution:
- (d) $T=2 \pi \sqrt{l / g}$. When the rocket accelerates upwards $\mathbf{g}$ increases to $(g+a)$.
BETA
