(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A 24.6 g pebble is stuck in the thread of a 28.7 in tire. If the tire can exert an inward radial friction force of up to 19.3 N on the pebble, how fast will the pebble be travelling with respect to the center of the wheel when it flies out tangentiall?

2. Relevant equations

a = v^2 / r

3. The attempt at a solution

I got:

19.3 N = (m*v^2)/r => v^2 = (19.3 * r) / m = (19.3N * 0.36449 m) / 0.0246 kg = 16.9 m/s = final answer = INCORRECT ????

This problem is supposed to be easy, but I dont know what I'm doing wrong here. Anyone?

**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: How fast will the pebble be travelling with respect to the center of the wheel

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