An industrial disc of radius 0.20 m speeds up uniformly from 120 rpm to 720 rpm while…
PHYSICS · Single correct · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion
Problem
An industrial disc of radius 0.20 m speeds up uniformly from 120 rpm to 720 rpm while rotating through 90 complete revolutions. What is the magnitude of the tangential acceleration of a point on its rim at the instant its angular speed reaches 360 rpm?
(a) 1.96m s−2
(b) 0.49m s−2
(c) 0.98m s−2
(d) 6.14m s−2