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Extra Question- Answer

                  Physics                                     Class-ix C.B.S.E

Answer the following questions:  

Q.1) What do you mean by circular motion? Write its salient feature.

Ans. When an object changes its position from one point to other point with respect to a fixed point of (center) within a circular path then motion of the object is called circular motion.

The salient features of circular motion are: -

·         This kind of motion is planer motion.

·         The reference point of the object is always fixed.

·         The position of the object at the different instance of time with respect to the center of the circla is always same. That is it represents the radio of circular path.

·         In a circular motion, the direction of motion of a object always changes and it is represented by the tangent drawn at that certain point of the location.

 

Q.2) What do you mean by uniform circular motion.

 Ans- When an object changes equal distance that is equal angular displacement in equal time interval with in a circular track then the motion of the object is said to be uniform circular motion.

 

Q.3) Differentiate rectilinear and circular motion.

Rectilinear Motion	Circular Motion
i) The path traversed by the object is always a straight line.	i) The path traversed by the object is always a circle.
ii) The reference point of the object is not usally fixed. It can be urbitravelly chosen.	ii) The reference point of the object is always fixed.
iii) The direction of motion is always fixed that is it is unidirectional in nature.	iii) The direction of the object is ever changing. That is it changes all the time.
iv) The parameter of this motion is coordinate to each other.	iv) The parameter of this motion is angular in nature.

 

-          Published by Bibhav Ranjan Das.

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