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Question
In which of the following phenomena friction does not play any role?
In which of the following phenomena friction does not play any role?
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Solution
The correct option is C Moon orbiting around the Earth
Friction plays a significant role while walking, lighting a matchstick or stopping the bicycle by applying brakes.
Friction is a force that opposes motion between any surfaces that are touching.Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them.
When moon is rotated around the earth, there is no object or obstacle present on the axis of moon to create any friction. That's why there is no friction in case of rotation of moon around the earth.
Hence, friction does not play any role in the Moon orbiting around the Earth.
Friction plays a significant role while walking, lighting a matchstick or stopping the bicycle by applying brakes.
Friction is a force that opposes motion between any surfaces that are touching.Friction occurs because no surface is perfectly smooth. Rougher surfaces have more friction between them.
When moon is rotated around the earth, there is no object or obstacle present on the axis of moon to create any friction. That's why there is no friction in case of rotation of moon around the earth.
Hence, friction does not play any role in the Moon orbiting around the Earth.
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