physics : class11 Direction of Gravitational Force : Gravitational Force : Gravitation MCQ Questions and Answers
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Direction of Gravitational Force
MCQ questions and answers.
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MCQ Questions
1. In which direction does the gravitational force on an object near Earth's surface act?
A.
Vertically upward
B.
Vertically downward toward Earth's center
C.
Horizontally toward the east
D.
Horizontally toward the west
Correct Answer:
Vertically downward toward Earth's center
Explanation:
The gravitational force exerted by Earth acts toward the center of Earth, which is vertically downward for an object near the surface.
2. What is the direction of the gravitational force exerted by the Moon on Earth?
A.
Away from the Moon
B.
Perpendicular to the line joining their centers
C.
Along the line joining their centers, toward the Moon
D.
Vertically upward from Earth's surface
Correct Answer:
Along the line joining their centers, toward the Moon
Explanation:
Gravitational attraction acts along the line joining the centers of two bodies and pulls each body toward the other.
3. The gravitational force between two masses always acts:
A.
Along the line joining their centers
B.
At right angles to the line joining their centers
C.
Only in the upward direction
D.
Only in the downward direction
Correct Answer:
Along the line joining their centers
Explanation:
The gravitational force between two bodies is directed along the straight line connecting their centers.
4. If Earth attracts an apple downward, in which direction does the apple attract Earth?
A.
Upward, toward the apple
B.
Downward, away from the apple
C.
Horizontally toward the apple
D.
There is no gravitational force on Earth
Correct Answer:
Upward, toward the apple
Explanation:
Gravitational force is mutual. The apple attracts Earth toward the apple, opposite to the force exerted by Earth on the apple.
5. A spacecraft is between Earth and the Moon. The gravitational force due to Earth on the spacecraft is directed:
A.
Toward the Moon
B.
Away from Earth
C.
Toward Earth
D.
Perpendicular to the Earth-Moon line
Correct Answer:
Toward Earth
Explanation:
Earth's gravitational force attracts the spacecraft toward Earth's center, regardless of the spacecraft's position.
6. A ball thrown upward is acted upon by Earth's gravitational force in which direction while it is moving upward?
A.
Upward, in the direction of motion
B.
Downward, toward Earth's center
C.
Sideways, perpendicular to its motion
D.
Away from Earth
Correct Answer:
Downward, toward Earth's center
Explanation:
The direction of gravitational force depends on Earth's attraction, not on the ball's direction of motion. It always points toward Earth's center.
7. If two spherical masses are separated by a distance, the gravitational force on the first mass is directed:
A.
Away from the second mass
B.
Toward the center of the second mass
C.
Vertically downward only
D.
Perpendicular to the line joining their centers
Correct Answer:
Toward the center of the second mass
Explanation:
A mass experiences gravitational attraction toward the other mass, along the line joining their centers.
8. At the surface of Earth, the direction of gravitational force is approximately toward:
A.
The nearest cloud
B.
The Earth's center
C.
The Sun only
D.
The Earth's equator
Correct Answer:
The Earth's center
Explanation:
Earth's gravitational force is directed radially inward, approximately toward the center of Earth.
9. When two objects attract each other gravitationally, their forces are directed:
A.
In the same direction
B.
Away from each other
C.
Toward each other along the line joining their centers
D.
Perpendicular to each other
Correct Answer:
Toward each other along the line joining their centers
Explanation:
Gravitational force is attractive, so each object experiences a force directed toward the other object along the line joining their centers.
10. An object placed on the opposite side of Earth from you is pulled by Earth's gravity in which direction?
A.
Toward you
B.
Away from Earth's center
C.
Toward Earth's center
D.
Parallel to Earth's surface
Correct Answer:
Toward Earth's center
Explanation:
At every location near Earth's surface, gravitational force points inward toward Earth's center, even though the local downward direction changes from place to place.
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Direction of Gravitational Force
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