Power help
Could someone explain why the work done per stroke (W=Fs) is 150x0.42J? How does it get 150N from the 50N in the question?
Thanks
btw its Q7 part b
(edited 10 years ago)
It's a mistake (misprint) in the question.
If you use the numbers in the question the object gains more potential energy than is put in by the jack. This is impossible.
150N must have been the intended value in the question.
If you use the numbers in the question the object gains more potential energy than is put in by the jack. This is impossible.
150N must have been the intended value in the question.
Original post by Stonebridge
It's a mistake (misprint) in the question.
If you use the numbers in the question the object gains more potential energy than is put in by the jack. This is impossible.
150N must have been the intended value in the question.
If you use the numbers in the question the object gains more potential energy than is put in by the jack. This is impossible.
150N must have been the intended value in the question.
Ok thanks, I was really confused :/
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