Question

A particle moving in a circle of radius R it takes 40 seconds to complete a Revolution find distance covered of magnitude of displacement after 2 minute and 20 second​

Answer 1

Answer:

20=140s=40×3+20s

After 2 minutes 20 seconds the particle has completed 3 revolutions and a half revolution,therefore is at the other end of the diameter.

Displacement=2r

Distance covered =3×2πr+πr=7πr

distance

∣displacement∣

=

7πr

2r

=

7π

2

Answer 2

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