The solid ball of radius r and mass m rolls without slipping down the 60 trough....

  

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The solid ball of radius r and mass m rolls without slipping down the 60° trough. Determine its angular acceleration. Hint: I just thought this was a fun problem that makes you think! Draw a diagram to show where the ball contacts the trough (on each side) and take moments about the line that joins these two contact points together. The solid ball of radius r and mass m rolls without slipping down the 60° trough. Determine its angular acceleration. Hint: I just thought this was a fun problem that makes you think! Draw a diagram to show where the ball contacts the trough (on each side) and take moments about the line that joins these two contact points together.