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JEE PHYSICS MCQ: GRAVITATION

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Which of the following statements is/are true?
For the particle on the surface of earth

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Correct option: D

the angular speed is

7.3 \times 10^{-5} \mathrm{rad} / \mathrm{s}

at the equator

Option D (the angular speed is

7.3 \times 10^{-5} \mathrm{rad} / \mathrm{s}

at the equator) is correct because the angular speed of Earth's rotation is constant for all points on the surface and equals to approximately

7.3 \times 10^{-5} \mathrm{rad} / \mathrm{s}

.

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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}}

. If the body is projected in a direction making an angle of

{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

. If the body is projected at an angle

\theta

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