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Practice Physics | Gravity on Bissoy — browse topics below and open any question.
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What is the value of universal gravitational constant?
ক
6.022 x 1023
খ
6.67 x 10-11 N m2/kg2
গ
1.602 x 10-19 C
ঘ
9.81 m/s2
If gravitational constant is decreasing with time, what will remain unchanged in case of a satellite orbiting around the earth?
ক
Time period
খ
Orbiting radius
গ
Areal velocity
ঘ
Angular velocity
For which one of the following does the centre of mass lie outside the body?
ক
A fountain pen
খ
A cricket ball
গ
A ring
ঘ
A book
What is the value of acceleration due to gravity at the centre of earth?
ক
-1
খ
0
গ
1
ঘ
Infinity
What is the value of acceleration due to gravity on the surface of the earth?
ক
9.6\cm\/s2
খ
9.8\m\/s2
গ
10.8\m\/s2
ঘ
9.8\cm\/s2
A body has a weight W on the surface of Earth. What is its weight on a planet whose mass is 15 times that of Earth and a radius that is 4 times that of the earth?
ক
15\/4 W
খ
16\/9 W
গ
16\/7 W
ঘ
16\/15 W
At which of the following places is the gravitational acceleration zero?
ক
at sea level
খ
at the center of the earth
গ
equator
ঘ
poles
Who was the first to experimentally determine the value of the Universal Gravitational Constant (G)?
ক
Henry Cavendish
খ
Isaac Newton
গ
Laurent Freidel
ঘ
Johannes Kepler
Which of the following does not affect the value of acceleration due to gravity?
ক
Mass
খ
Vertically
গ
Size of earth
ঘ
Depth
What is the name of the force with which Earth pulls everything towards itself?
ক
Thrust
খ
Resistance
গ
Air pressure
ঘ
Gravity
Which of the following is correct about moon's gravitation?
ক
Moon's gravitation = $${\frac{1}{6}^{th}}$$ of Earth's gravitation
খ
Moon's gravitation = $${\frac{1}{6}^{th}}$$ of Mars gravitation
গ
Moon's gravitation = $${\frac{1}{8}^{th}}$$ of Earth's gravitation
ঘ
Moon's gravitation = $${\frac{1}{8}^{th}}$$ of Mars gravitation
What is the value of the acceleration due to gravity (g) of Earth?
ক
5.4 m s<sup>-2</sup>
খ
9.8 m s<sup>-2</sup>
গ
3.8 m s<sup>-2</sup>
ঘ
6.8 m s<sup>-2</sup>