A particle moves in the x-y plane , acco...

A particle moves in the `x-y` plane , accoding to the equation, `r = (hati + 2hatj) A cos omegat`. The motion of the particle is

A

on a straight line

B

on an ellipse

C

perodic

D

simple harmonic.

Text Solution

Verified by Experts

The correct Answer is:

A, C, D

`vecr=Acosomegathati+2Acosomegathatj`
`|vecr|=Acosomegatsqrt5=sqrt5Acosomegat`
So motion is at straight line, periodic SHM.

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