Monday

December 22, 2014

December 22, 2014

Posted by **Papito** on Monday, May 7, 2007 at 1:18pm.

(a) What is the net torque produced by the two forces? (Assume counterclockwise is the positive direction

(b) What is the angular acceleration of the disk?

This is how i solved it.

Torque = Fl

net torque = (125N x 0.454m) + (90N x 0.454N)=97.81

Angular acceleration = torque/ inertia

Inertia = mass x radius ^2

= 40.3 kg x 0.454 ^2 =8.31

Angular acceleration = 97.81/ 8.31 =11.77 rads/s^2

Please check solution

Isnt the moment of inertia 1/2 m r^2 ?

So Moment of Inertia = 0.5x 40.3kg x 0.454^2 = 4.15

Angular acceleration =97.81/4.15

=23.55

**Answer this Question**

**Related Questions**

Physics - Can you please help with this problem. I don't know how to solve it at...

physics - A uniform disk with a mass of 27.3 kg and a radius of 0.309 m is free ...

physics - A uniform disk with a mass of 27.3 kg and a radius of 0.309 m is free ...

Physics please check - A uniform solid disk with a mass of 32.3 kg and a radius ...

Physics - A flat uniform circular disk (radius = 2.10 m, mass = 1.00 102 kg) is ...

Physics - A rotating uniform-density disk of radius 0.7 m is mounted in the ...

Physics - A uniform solid disk of radius 1.7 m and mass 81.3 kg is free to ...

Physics - A rotating uniform-density disk of radius 0.6 m is mounted in the ...

science - A uniform disk with radius 0.320m and mass 28.0kg rotates in a ...

Physics - A small disk of radius R1 is mounted coaxially with a larger disk of ...