The given figure shows a bucket being whirled around in a vertical circle with a help of a string with very high constant speed. What is a correlation between above action and the motion of the moon around the earth?

The bucket is in uniform circular motion like the moon.

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The force exerted by the thread on the bucket (Tension force) is replaced by the gravitational force in case of the moon.

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If there is no string, the bucket will not whirl. Similarly, if there is no gravitational force, there will be no moon revolving around the earth.

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All of the above.

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Solution

The correct option is D
All of the above.

The whirling of the bucket with the help of a string is similar to the orbit of the moon around the earth. Centrifugal force makes an object to rotate in a circular motion. The centrifugal force in case of the bucket is the tension (the pull of string on the bucket) provided by the string on the bucket. Similarly, the gravitational force between moon and earth act as the centrifugal force for its rotation.

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Q. A bucket tied at the end of a

1.6 m

long string is whirled in a vertical circle with constant speed. What should be the minimum speed so that the water from the bucket does not spill, when the bucket is at the highest position (Take

g = 10 m / {s e c}^{2})

Q. A bucket tied at the end of a

1.6 m

long string is whirled in a vertical circle with a constant speed. What should be the minimum speed, so that the water from the bucket does not spill out when the bucket is at the highest position during the rotation?

(g = 10 m / s^{2})

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