A disc of moment of inertia 29.1 kg m2 is made to rotate about an axis through its centre by a torque of T . The disc starts from rest and, after {t} s, has kinetic energy {k} J.(adsbygoogle = window.adsbygoogle || []).push({});

The torque is removed when the disc is rotating at 8.0 rad s-1 . An opposing torque of 13.2 N m is applied to slow the disc down.

Calculate the number of revolutions the disc makes after the second torque is applied, before it comes to rest.

how do i approch this problem (if numbers were involved) i would have to calculate the angular acceleration and then tention. after t seconds

any help would be apprecated thanks in advance

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Calculate the number of revolutions the disc makes

**Physics Forums | Science Articles, Homework Help, Discussion**