Suppose a gear has a yellow mark on one of its teeth. The gear starts moving. What are the motion of the gear and the motion of the yellow mark respectively?

Rectilinear motion

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Rotational motion

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Circular motion

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Oscillatory motion

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Solution

The correct option is B
Rotational motion

When a body moves about its own axis it is known as rotational motion.

A gear rotates around its axis. Hence, the motion of the gear is rotational motion.

The motion of a body along a circular path is known as circular motion.

The yellow mark on the gear traces a circular path on moving. So, the motion is circular.

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