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greenskyy
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Homework Statement
http://img691.imageshack.us/img691/2702/drawing1.png
A 1kg block is suspended from a rope that wraps around a pulley where it is pulled by a 10N force. The pulley is a disk with mass 50g and has a diameter of 4cm. Assume enough friction that the rope does not slip but neglect friction in the bearing.
Homework Equations
This is actually one of the questions. I am figuring the three equations would be:
[tex]\tau=I\alpha[/tex]
[tex]F_{net}=10N - m_{b}g[/tex]
[tex]a=\alphar[/tex]
The Attempt at a Solution
Calculate the acceleration of the block using your equations above.
Well, I tried to start with the torque equation, which became:
[tex]\frac{m_{p}r^{2}a}{2r}[/tex]
[tex]\frac{m_{p}Fr}{2m}[/tex]
Although, I have no idea what the "m" is, which came about through a=f/m . I am completely stumped at this point and making no progress. Any suggestions?
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