The cable of an electric motor exerts a force of 30 N on a body and pulls it through a distance of 20 m in one minute. What is the power of the motor?
Answers
Answered by
1
Answer:
Power is defined as P=F.v
where F is force applied and v is velocity.
P=Fv=F×ts=40×6030= 20W
Answered by
3
Answer:
Power of the motor is 10 W.
Explanation:
Given:
- Force (F) = 30 N
- Distance (s) = 20 m
- Time (t) = 1 minute = 60 second
To find:
Power of the motor.
Solution:
We know that,
Work = force × displacement
By using this formula, firstly we will find work done.
Work = force × displacement
Substitute the known values, we get
Work = 30 × 20 = 600 J
Thus, work done = 600 J
Now, power = work/time
= 600J/60s
= 10 W
Thus, power of the motor is 10 W.
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