(adsbygoogle = window.adsbygoogle || []).push({}); Coin Rolling Up Incline, no mass given!?

1. [SFHS99 8.P.46.] A coin with a diameter of 3.40 cm rolls up a 27.0° inclined plane. The coin starts with an initial angular speed of 55.0 rad/s and rolls in a straight line without slipping. How far does it roll up the inclined plane?

Having some troubles with this problem, since it doesnt give the mass of the object. I have no problems doing this type of problem when a mass is given, I just use the formula a = (mg sin0)/(m+(I/R^2)), then convert that to angular acceleration, and use angular kinematic equations to find the delta theta, and convert that into a meter value by multiplying the radius by the angular displacement. That doesn't work here though, since I have no mass! Any help would be greatly appreciated, thanks!

**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!

# Coin Rolling Up Incline, no mass given?

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