Sunday

April 20, 2014

April 20, 2014

Posted by **Gaurav** on Thursday, January 26, 2012 at 5:00am.

- physics -
**drwls**, Thursday, January 26, 2012 at 6:32amI assume they want the angular velocity in radians/sec units.

After 5 revolutions, the angle turned is

A = 10 pi radians

The angular acceleration rate is

alpha = 4 pi radians/s^2

The time since starting is given by

A = (1/2)*alpha*t^2

t^2 = 2A/alpha = 5 sec^2

t = 2.236 s

w(at t = 2.236 s) = alpha*t = 28.1 rad/s

**Related Questions**

physics - If body is rotating 30r.p.m in clockwise what is angular velocity and ...

Mechanics _ physics - A wheel rotating with an angular velocity of 16rad/sec is ...

physics - A thin disk, mounted on a frictionless vertical shaft of negligible ...

Physics - The angular position of a point on the rim of a rotating wheel is ...

Physics - The angular position of a point on the rim of a rotating wheel is ...

Physics - The moment of inertia of an asteroid rotating about its own axis is 5....

physics - A pulley rotating in the counterclockwise direction is attached to a ...

Physics - A wheel starts rotating from rest with uniform angular acceleration....

physics - A thin uniform rod is rotating at an angular velocity of 6.7 rad/s ...

physics - A thin uniform rod is rotating at an angular velocity of 7.70 rad/s ...