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anap40
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[SOLVED]Pivoting Stick
A uniform stick of mass M = 1.3 kg and length L = 2.3 m is pivoted at one end. It is held horizontally and released. Assume the pivot is frictionless. Find the angular acceleration (in rad/s) of the stick immediately after it is released.
Continuation: Find the magnitude in Newtons of the force Fo exerted on the stick by the pivot immediately after it is released.
http://img134.imageshack.us/img134/1377/prob06azg9.gif
torque=Ia
I set T=Ia
t=1.15(1.3)(9.81)=14.67
I=mr^2=1.3(1.15)^2=1.72
14.67=1.72a
a=8.53rad/s(s)
It tells me that is the wrong answer
For the second part, shouldn't the force be 0?(0is not the right answer)
Homework Statement
A uniform stick of mass M = 1.3 kg and length L = 2.3 m is pivoted at one end. It is held horizontally and released. Assume the pivot is frictionless. Find the angular acceleration (in rad/s) of the stick immediately after it is released.
Continuation: Find the magnitude in Newtons of the force Fo exerted on the stick by the pivot immediately after it is released.
http://img134.imageshack.us/img134/1377/prob06azg9.gif
Homework Equations
torque=Ia
The Attempt at a Solution
I set T=Ia
t=1.15(1.3)(9.81)=14.67
I=mr^2=1.3(1.15)^2=1.72
14.67=1.72a
a=8.53rad/s(s)
It tells me that is the wrong answer
For the second part, shouldn't the force be 0?(0is not the right answer)
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