Question

A stone tie to the end of a rock 60 cm long . The stone IS REVOLVING IN A CIRCULAR PATH WITH a CONSTANT SPEED and MAKES 12 REVOLUTION in a 20 SECOND . What is THE magnitude and direction of acceleration.

Answer 1

If a body perform circular motion with a a constant speed when the body will only have centripetal acceleration so we can assume that the direction is always in the centre .

Now ,

r = 60 cm = 0.6 m

Acceleration , a = w² r

Frequency = 12/20 hrz

Average Velocity => w = 2π * f

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