First slide

Simple hormonic motion

Question

A particle of mass 4 gm is moving simple harmonically with a period 8 sec and amplitude 8cm. What is its velocity when the displacement is 8cm

Easy

A

8 cm/sec
B

6 cm/sec
C

4 cm/sec
D

zero

Solution

$\large v\, = \,\omega \sqrt {{A^2} - {y^2}} \, = \,\omega \sqrt {{8^2} - {8^2}} \, = \,0$
(or velocity is zero extreme position)

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