Solve the all parts of given question:
Question: A physics TA pushes a 20.0-kg equipment cart at a constant velocity a distance of 20.0 m down the hall. The force she exerts on the cart is directed at an angle 26.0° below the horizontal and force of friction opposing the motion of cart is 40.0 N.
(a) Determine the magnitude of the force exerted on the cart by the TA:
___ N
(b) Determine the work done by the force the TA exerts on the cart:
___ J
(c) Determine the work done by the force of friction acting on the cart:
___ J
(d) Determine the work done by the force of gravity acting on the cart:
___ J
I want help to find the work done by the force of gravity acting on the cart.