Concepts Of Physics MCQ Edition [Volume 1]PhysicsRotational Mechanics
Determine the angular velocity of a body rotating with an acceleration of 2 rev/s ^2 as it completes the 5 th revolution after starting.
Options
- A20 rev/s
- B10 rev/s
- C2 5 rev/s
- D10 rev/s
Correct answer
C. 2 5 rev/s
Step-by-step solution
Given: Initial angular velocity, ₀ = 0 Angular acceleration, = 2 rev/s ^2 Angular displacement, = 5 rev Using the equation of rotational kinematics: ^2 = ₀^2 + 2 Substituting the given values: ^2 = 0^2 + 2(2)(5) ^2 = 20 = 20 = 2 5 rev/s