JEE PHYSICS MCQ: GRAVITATION

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What effect occurs on the frequency of a pendulum of it is taken from the earth surface to deep into a mine?

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Correct option: B

decreases

The correct answer is B (decreases) because the effective value of g decreases as you go deeper into a mine, and frequency is proportional to the square root of g.

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The escape velocity for a body projected vertically upwards from the surface of the earth is

11.2\mathrm{\;\;km}{\mathrm{s}^{ - 1}}

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{45^0}

with the vertical, the escape velocity will be The escape velocity of a body projected from the surface of earth is

v_e

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\theta

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