I'm having some trouble with a few rotational motion problems.(adsbygoogle = window.adsbygoogle || []).push({});

One question says... A wheel 33 cm in diameter accelerates uniformly from 240 rpm to 360 rpm in 6.5 s. How far will a point on the edge of the wheel travel in this time.

Is this asking for the angular displacement or the linear displacement?

The next one says A bowling ball of mass 7.3 kg rolls without slipping down a lane at 3.3m/s. (a) calculate its total kinetic energy. (b) Calculate its angular momentum

I can see how to get the total kinetic energy i think, but how do i find the angular momentum if i dont have the radius or the angular velocity?

Any help would be appreciated

**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: Few homework questions

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