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10. Gravitation question bank (Physics)

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Q1.

The ratio of energy required to raise a satellite of mass '$m$' to a height '$h$' above the earth's surface to that required to put it into the orbit at the same height is $[R = \text{radius of the earth}]$

(A)

$\frac{h}{R}$

(B)

$\frac{4h}{R}$

(C)

$\frac{3h}{R}$

(D)

$\frac{2h}{R}$

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Q2.

Three point masses,each of mass $m$,are kept at the corners of an equilateral triangle of side $L$. The system rotates about the center of the triangle. The period of rotation $T$ is directly proportional to:

(A)

$\sqrt{L}$

(B)

$L^{3/2}$

(C)

$L$

(D)

$L^2$

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