A particle moves along a circle of radius 20m with constant

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A particle moves along a circle of radius 20 m with constant tangential acceleration.
π

If the velocity of the particle is 80 m/s at the end of the second revolution after motion has begun, the tangential acceleration is

1. 40 π m/s²
2. 40 m/s²
3. 640 π m/s²
4. 160 π m/s²

Correct Option: B

Circumference = 2πr = 2π ×	20	= 40 m
	π

Distance travelled in 2 revolutions = 2 × 40 = 80 m
Initial velocity = u = 0 Final velocity v = 80m/sec
Applying the formula, v² = u² + 2as
(80)² = 0² + 2 × a × 80 ⇒ a = 40 m/sec²

A particle moves along a circle of radius		20		m with constant tangential acceleration.
		π