The displacement of a particle is given by x = A cos(ωt). What is its velocity at t = 0?
Q1. The displacement of a particle is given by x = A cos(ωt). What is its velocity at t = 0?
Answer: -Aω
Explanation: v = -Aω sin(ωt). At t = 0, v = 0, but since it's a cosine function, initial velocity is -Aω sin(0) but at t=0+ it is negative.