Question

A car of mass 2000kg rounds a curve of 250m at 90km/hr,computes it angular speed

Answer 1

Explanation:

veloctiy = Radius* Angular Velocity

velocity=90*5/18 m/s

velocity=25 m/s

angular velocity = velocity/radius=25/250=0.1 rad/s

centripetal acceleration = angular velocity ^2 * radius = 0.01 *250 =2.5 m/s^2

centripetal force = m* centripetal acceleration = 2000*2.5 =5000 N