Subject - Physics:

Basics

MCQ - 5-10472

Question:

If a feather and an iron bar is released from a same height in a room without any air resistance. Which of the following is true?

Iron bar will hit the ground first because it is heavier than feather.
Both Iron bar and feather will hit the ground at the same time.
Both Iron bar and feather will acquire different accelerations.
Both Iron bar and feather will hit the ground at the same time.

Correct Answer: B

Explanation:

Acceleration of a body due to gravity (g) is independent of the mass of the body.
g = GM/r²
G is the Universal Gravitational Constant
M is the mass of the Earth
R is the radius of the Earth

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346 MCQ for effective preparation of the test of Basics of Physics section.

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