CH7

You apply a force of 50N to a wrench .2m from the axis you want to turn.  The angle you push at is 70°.  Find torque.
 
 
 
 
 

Four equal masses hang from and balance a bar. They are L1,L2,R1, and R2.  (the "L" masses are on the left side of the fulcrum)  The distances from the fulcrum are: L1=7m, L2=11m, R1=2m.
Find distance that R2 must be from bar.
 
 
 
 
 

How much angular momentum does a bowling ball have if its mass=16 lb, radius is .11m, and linear V=4m/s?
 
 
 
 
 

A dumbbell spins on a pivot.  If the masses are slid in so that they are twice as close to the pivot, how much does w change?
 
 
 
 
 

How much torque is being put on a hoop (r=.5m, m=5Kg) if it is accelerating at a=.25r/s/s?