Question

The radius and mass of earth are increased by 0.5%. Which of the following statements are true at the surface of the earth

• A. g will increase
• B. g will decrease
• C. Escape velocity will remain unchanged
• D. Potential energy will remain unchanged

Answer 1

Answer: (B), (C), (D)

The correct options are
B

g will decrease

C

Escape velocity will remain unchanged

D

Potential energy will remain unchanged

$g=\frac{GM}{R^2},v_e=\sqrt{\frac{2GM}{R}}andU=\frac{-GMm}{R}$