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. $\frac 29 \ m$
• B. $18\ m$
• C. $6\ m$
• D. $\frac {2}{3 }\ m$

Answer 1

Answer: (B)

$18\ m$

Answer 2

Height of jump on the planet B;

$h_b$ =$\frac {g_A}{g_B}$× height of jump on the planet A (∴ mgh = constant)

$h_b = \frac {9}{1} \times 2$

$h_b = 18 \ m$

So, the correct option is (B): 18 m