- #1
PhyIsOhSoHard
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Homework Statement
A solid cylinder is rolling along a horizontal plane and is friction less around its symmetric axis. The cylinder is pulled by a constant force, F and travels the distance, d. The cylinder does not glide and has a friction force, f on the ground.
Known values:
Mass: M
Radius: R
Moment of inertia: ##I=\frac{1}{2}MR^2##
Force: F
Angle of the force: θ
Friction force: f
Distance traveled: d
Angular acceleration: α
Find the angular velocity and rotational kinetic energy for the cylinder when it starts at rest and travels the distance d.
Homework Equations
[itex]\frac{d\omega}{dt}=\alpha[/itex]
[itex]K=\frac{1}{2}I\omega^2[/itex]
The Attempt at a Solution
From a previous question, I found the angular acceleration:
I know the relation between angular velocity and angular acceleration is:
[itex]\frac{d\omega}{dt}=\alpha[/itex]
However what got me confused is the time, t. If I can integrate my angular acceleration in terms of t then I can find my angular velocity but I don't know the time?