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A man pushes a 19.0 kilogram shopping cart at a constant velocity for a distance of 25.1 meter on a flat horizontal surface. She pushes in a direction 25.6 degree below the horizontal. A 34.6 Newton frictional force opposes the motion of the cart.
(a) Find the magnitude of the force that the shopper exerts?
(b) Find the work done by the pushing force?
(c) Find the work done by the frictional force?
(d) Find the work done by the gravitational force.
What is the frequency of the string.
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