Homework Help: physics

Posted by Rod on Saturday, November 8, 2008 at 7:27pm.

A soild wheel initially rotating at 50.0 rad/s comes to a uniform stop after 8.00 rotations.

Calculate the tangential accleration at the rim. Given that the angular acceleration is -24.9 rad/s^2.

I know its aT = r alpha but how do I get the radius?

physics - bobpursley, Saturday, November 8, 2008 at 7:49pm
The intial velocity was 50rad/sec* radius. The acceleration is -24.9*r m/s^2

vf^2=vi^2 + 2a*d

0=2500r^2+ 2(-24.9)r*2PIr*8
solve for r.

check my thinking.

Answer this Question

Related Questions

physics - A flywheel with a diameter of 1 m is initially at rest. Its angular ...
physics - A flywheel with a diameter of 1 m is initially at rest. Its angular ...
physics - A flywheel with a diameter of 1 m is initially at rest. Its angular ...
physics - A flywheel with a diameter of 1 m is initially at rest. Its angular ...
physics - A stationary bicycle is raised off the ground, and its front wheel (m...
physics - An electric motor rotating a workshop grinding wheel at a rate of 9.80...
Physics - A Ferris wheel, rotating initially at an angular speed of 0.500 rad/s...
physics - A wheel of mass 0.47 kg and radius 49 cm is spinning with an angular ...
Physics - The combination of an applied force and a frictional force produces a ...
physics 2...help please - A wheel on a game show is given an initial angular ...

For Further Reading

First Name:
School Subject:
Answer: