A lever with an effort arm of 10 meters and a load arm of 2 meters is used to lift an object
weighing 220 Newtons to a height of 4 meters. If 400Joules of work is done, how much force
must have been applied? (1 point)
4000 N
800 N
100 N
1600 N
To solve this problem, we can use the principle of work done:
Work done = force x distance
Given that 400 Joules of work is done, the force applied can be calculated using the formula:
400 J = force x 10 m
force = 400 J / 10 m = 40 N
Therefore, the amount of force applied is 40 N.