Centripetal Force
Centripetal Force
Motion of Moon around Earth and Centripetal Force:
The motion of the moon around the earth is due to centripetal force provided by the force of attraction of the Earth. The force that keeps a body moving along the circular path is acting towards the centre and responsible for the change in direction of velocity or acceleration is called centripetal (centre seeking) force. The motion of the moon around the earth is due to the centripetal force. The centripetal force is provided by the force of attraction of the earth. If there were no such force, then the moon would pursue a uniform straight line motion. If an object of mass m moves with a uniform speed (v) along a circular path of radius (r), its acceleration is
. Then by Newton’s second law of motion, the centripetal force is
.
Example:
1. Spinning a ball on a string or twirling a lasso.
2. Turning a car.
3.Going through aloop on aroller coaster.
4. Planets around the sun.
The motion of the moon around the earth is due to __________________ provided by the force of attraction of the Earth. | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct : (a) The motion of the moon around the earth is due to centrifugal force provided by the force of attraction of the Earth. (b) Going through aloop on aroller coaster is due to centripetal force. (c) The motion of the moon around the earth is due to centripetal force provided by the force of attraction of the Earth. | |||
| Right Option : B | |||
| View Explanation | |||
Which of the following are correct : (a) The motion of the moon around the earth is due to centripetal force provided by the force of attraction of the Earth. (b) Planets around the sun is due to centripetal force. | |||
| Right Option : C | |||
| View Explanation | |||
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