Question

The acceleration due to gravity on the planet A is 9 times the acceleration due to gravity on planet B. A man jumps to a height of 2m on the surface of A. What is the height of jump by the same person on the planet B?

(a) 2/9 m

(b) 18 m

(c) 6 m

(d) 2/ m

Answer 1

Correct answer is (b) 18 m

For explanation I would say: For the same gain of potential energy in both cases

MgA hA=mgB hB

9×gB×2=gB×hB

hB=18m