Tina applied 120N to push an object for a distance of 5m in 1 minutes, while shiba applied 150N to push the same object for a distance of 4m in 45 seconds. Find out who has done more work and who has more power?
Answers
Answered by
6
This is the allover solution to your question. This is the exact way how to calculate and solve these types of questions. Now, the formulas we have used are :
(1) Work done = Force × Displacement.
(2) Power = Work done/Time.
☑ The S. I. unit of work (JOULE) is maintained as well as the other S. I. units also maintained.
☑ In case of power, Joule per second is often referred to as "WATT" after the name of scientist James Prescott Watt. Bigger units are Kilo Watt, Mega Watt, Giga Watt, etc.
☑ 1 Kilowatt = 100 Watt
☑ 1 Mega watt =
☑ In mechanical engineering, we often use horse power (symbol, H.P.) as the unit of power and you should remember that, 1 H.P. = 746 W
☑ It is obviously true that different persons may take different timings to do the same work.
(1) Work done = Force × Displacement.
(2) Power = Work done/Time.
☑ The S. I. unit of work (JOULE) is maintained as well as the other S. I. units also maintained.
☑ In case of power, Joule per second is often referred to as "WATT" after the name of scientist James Prescott Watt. Bigger units are Kilo Watt, Mega Watt, Giga Watt, etc.
☑ 1 Kilowatt = 100 Watt
☑ 1 Mega watt =
☑ In mechanical engineering, we often use horse power (symbol, H.P.) as the unit of power and you should remember that, 1 H.P. = 746 W
☑ It is obviously true that different persons may take different timings to do the same work.
Attachments:
Similar questions