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Q.

What is rotatory motion?


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a

Rotation of any object around an axis

b

Rotation of any object through an axis

c

Both 1 and 2

d

None of these 

answer is A.

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Detailed Solution

Concept- Rotatory motion is the physical motion that occurs when an object revolves or spins on an axis. It is the movement of any object along any axis surface in a nutshell. The rotation of any object around an axis is known as rotatory motion. The gripping of helicopter fans around a pivot is a good example of this process. The specific body is predicted to acquire rotational motion if all of the particles move along rings in parallel planes. The axis of rotation is a rigid line parallel to the parallel planes that runs through the centre of these rings. The twisting effect of force around the rotational axis as a result of an external force is known as the moment of force or torque. Torque is defined as the product of implied force and the upright distance of the rotational axis. A body is said to be in rotatory motion when it rotates around a fixed axis.
Examples of Rotatory Motion: Because all of its points move in a circular path around a fixed axis, a spinning wheel is an example of rotatory motion.
Hence, option 1 is the correct answer.
 
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