A clerk can lift cylindrical packages 1 meter vertically, or can roll them up a 2-meter-long ramp to the same elevation. With the ramp, the applied force required is about
A. half as much.
B. the same.
C. twice as much.
D. four times as much.
Answer:A
A clerk can lift cylindrical packages 1 meter vertically, or can roll them up a 2-meter-long ramp to the same elevation. With the ramp, the applied force required is about
A. half as much. B. the same. C. twice as much. D. four times as much.