Answer:
Im pretty sure 1 is gravity, 2 is force
Explanation:
Answer:
Explanation:
Given
mass of crane 
distance moved 
Since it is moving with a constant velocity therefore net force on it is zero
Tension force=weight
T=mg
Work done by Tension T is



Work done by Gravity will be equal in magnitude but opposite in sign and can be obtained by work energy theorem which states that change in kinetic energy of object is equal to work done by all the forces


85 N - 40 N = 45 N
And depending on direction the greater force is being pulled towards