Gravitation Question 4

Question: An iron ball and a wooden ball of the same radius are released from a height h in vacuum. The time taken by both of them to reach the ground is [NCERT 1975; AFMC 1998]

Options:

A) Unequal

B) Exactly equal

C) Roughly equal

D) Zero

Show Answer

Answer:

Correct Answer: B

Solution:

Time of decent$ [t=\sqrt{\frac{2h}{g}}] $ . In vacuum no other force works except gravity so time period will be exactly equal.



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