Answer:
400watts
Explanation:
Power is defined as the amount of energy expended in a specific time. It is also defined as the change in work done with respect to time.
Mathematically,
Power = Workdone/time
Work done = Force×distance
Power = Force × Distance/Time
Given force = mass× acceleration due to gravity
Force = 60×10 = 600N
Distance covered = 4.0m
Time taken = 6.0seconds
Power expended = 600×4/6
Power expended = 400Watts
The average mechanical power (in W) required to do this is 400Watts
Answer:
392 W.
Explanation:
Given:
Mass, m = 60 kg
Height, h = 4 m
Time, t = 6 s
Power = energy/time
Energy = mass × acceleration × distance
Power = (60 × 9.8 × 4)/6
= 392 W.
