Question

A particle starts moving along a circle radius 20m with a constant tangential acceleration if the velocity of the particle is 50m/s at the end of the second centripetal after the motion has begun the tangential acceleration is:

• A. $1.6$
• B. $4$
• C. $125$
• D. $13.2$

Answer 1

The correct option is C $125$

Given,

Tangential velocity, $v=50m{s}^{-1}$

Radius of circular path, $r=20m$

Centripetal acceleration, $a_c=\frac{v^2}{r}=\frac{{50}^2}{20}=125m{s}^{-2}$

Hence, centripetal acceleration is$125m{s}^{-2}$