a) Distinguish between work, energy and power. State the SI units for each
of these quantities.
b) When a force of 50 N is applied to a car, it gets displaced by 5 m.
Calculate the work done on the car.
Answers
Answered by
0
Explanation:
work:joule
Energy: joule
Power:watt
Answered by
1
Answer:
Ans of (a) SI unit of energy is Joule. The rate of doing work is called power. SI unit of power is watt. Illustrate the law of conservation of energy by discussing the energy changes, which occur when we draw a pendulum bob to one side and allow it to oscillate.
ans (B)
As we know, we calculate work as:
Work = Force * Displacement in direction of Force,
W=F⋅s ,W=50⋅5 ,W=250Nm . So,
The work done is
250Nm
(Newton meters).
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