Question # 1

The mass of a body is 1 kg, its mass in deep space is :

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1 Kg

0.5 Kg

0.25 kg

0

Gravitational constant depends on:

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Medium

Force

Weight

It does not depend son anything

Weight of the body when we increase its height from earth's surface.

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Increase

Decrease

Remain constant

None

The value of g on moon's surface is 1.6 ms-2. What will be the weight of a 100 kg body on the surface of the moon?

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100 N

160 N

1000 N

1600 N

Mass of earth is approximately _________

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3.7 x 10²⁴ kg

25.94 kg

6.0 x 10²²kg

6 x 10²⁴kg

Near the surface of Earth, the gravitational field strength is

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10 Nkg-1

Zero

100 Nkg-1

1000 Nkg-1

The altitude of geostationary orbits in which communication satellites are launched above the surface of the earth is;

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850 km

1000 km

6400 km

42300 km

The orbital speed of a low orbit satellite is:

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Zeri

8 ms^-1

800 ms^-1

8000 ms^-1

The velocity of geostationary satellites with respect to Earth is

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Vo

2Vo

Zero

1/2 Vo

The value of G is __________ Nm² kg^-2.

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6.67 x 10^-11 Nm² kg^-1

6.67 x 10^-11Nm²kg

6.67 x 10^-11Nm²kg^-2

6.67 x 10^-11Nm kg^-1

The altitude of geostationary orbits in which communication satellites are launched above the surface of the Earth is

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850 km

1000 km

6400 km

42,300 km

The value of g increases with the :

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Increase in the mass of the body

Increase in altitude

Decrease in altitude

None of the above

Orbital velocity v_o =

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√gR

√RG

gR

gR²

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