Q. The amplitude of an oscillating simple pendulum is $10cm$ and its period is $4\ s.$ Its speed after $1\ s$ after it passes its equilibrium position, is
A) Zero
B) $0.57m/s$
C) $0.212m/s$
D) $0.32m/s$
Explanation
(a) At the time $t = \frac{T}{4} = \frac{4}{4} = 1\ \sec$ after passing from mean position, the body reaches at it’s extreme position. At extreme, position velocity of body becomes zero
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.