Homework Help: phy

Posted by mas on Saturday, October 16, 2010 at 2:09pm.

A centrifuge rotor rotating at 13,000 rpm is shut off and is eventually brought uniformly to rest by a frictional torque of 1.30 m·N. If the mass of the rotor is 4.80 kg and it can be approximated as a solid cylinder of radius 0.0710 m, through how many revolutions will the rotor turn before coming to rest?

phy - bobpursley, Saturday, October 16, 2010 at 2:14pm
calculate the moment of inertia I for a solid cylinder.
Torque= I * alpha
then

displcement= wi*t-1/2 alpha*t^2

you are given wi, t, and have calculated alpha

Answer this Question

Related Questions

physics - A centrifuge rotor rotating at 7,000 rpm is shut off and is eventually...
Physics - A centrifuge rotor rotating at 10700 rpm is shut off and is eventually...
Physics - A centrifuge rotor rotating at 11500 is shut off and is eventually ...
Physics - A centrifuge rotor has a moment of inertia of 3.30 10-2 kg·m2. ...
Physics - A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The...
Physics - A 4.0 kg wheel of 20 cm radius of gyration is rotating at 360 rpm. The...
Electricity - A 3-phase 50Hz, 8 pole induction motor has an effective stator to ...
physics - A centrifuge accelerates uniformly from rest to 18000 rpm in 180 s. ...
Physics - A centrifuge is a common laboratory instrument that separates ...
Physics - (b)A centrifuge has a maximum rotation rate of 10,000 rpm and can be ...

For Further Reading

First Name:
School Subject:
Answer: