A body is moving with constant speed, in a circle of radius 10   m . The body completes one revolution…

A body is moving with constant speed, in a circle of radius 10 m. The body completes one revolution in 4 s. At the end of 3rd second, the displacement of body (in m) from its starting point is:
  1. 30
  2. 15 π
  3. 5 π
  4. 102

Solution

Give: r=10 m, T=4 s.

Displacement is defined to be the change in position of an object. As we can see from the above figure, displacement will be d=r2+r2

⇒d=102 m

Asked in: JEE Main 2023 (31 Jan Shift 2)

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