NTA Abhyas JEE Main2020PhysicsMotion in One DimensionPractice
A point moves in the x - y plane according to x = A sin ω t and y = A 1 – cos ω t where A and ω are positive constants. The distance traversed by the point during the time τ is
Options
- AA ω 2 τ
- BA ω 2 τ
- CA ω τ
- DA ω τ
Correct answer
C. A ω τ
Step-by-step solution
Distance travelled by point in time t is: S = ∫ 0 τ V → d t ∵ V → = V x 2 + V y 2 Where, V x = d x d t = A ω cos ω t and V y = d y d t = A ω sin ω t S = ∫ 0 τ A ω d t = A ω τ