Suppose that after a certain time t_L, the string has been pulled through a distance L. What is the final rotational speed w_final of the wheel?(adsbygoogle = window.adsbygoogle || []).push({});

Express your answer in terms of L, F, I, and w_0

Extra Info:

w_0 = angular velocity

k = dimensionless constant

m = mass

r = radius

Moment of Inertia = Ikmr^2

QUESTION 1

w_final = ?

QUESTION 2

What is the instantaneous power P delivered to the wheel via the force (F) at time t = 0?

P = ?

I have no clue how to approach the question, help would be much appreciated

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

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: Pullin a string to add energy to a wheel

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