A box is pushed 2.1m up a ramp into a container by an effort force of 200N.
The container gains 200N.
1)What is the energy used to push the container?
2)What is the efficiency of the machine?
3)What force can affect the load when it is being pushed?
a. assuming no friction, energy=force*distance=200*2.1 joules
b. efficiency=200/(200*2.1)
c. gravity, and friction.