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Pendulum problem homework

  • Thread starter chelito19
  • Start date
1. Homework Statement
A pendulum has a mass of 7.5 kg with a center of mass at G (radius=250mm) and hass a radius of gyration about the pivot O of 295 mm. If the pendulum is released from rest at theta=0º, determine the total force supported by the bearing at the instant when theta=60º. Friction in the bearing is considered negligible


2. Homework Equations
At-Wsin(theta)=mr(alpha)
An-Wcos(theta)=mr(omega)^2
rAt=mk^2(alpha)

k=radius of gyration
At=tangential acceleration
An=normal acceleration


3. The Attempt at a Solution
I´m stuck. I know there has to be some relation between the moment of inertia and the acceleration but I don´t know how to solve this.
 

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