- #1

danago

Gold Member

- 1,122

- 4

Heres one of the questions:

"A weightlifter lifts a weight of 202kg to a height of 2.7m above the ground. He does this in 1.7 seconds. What is the power of the weightlift?"

I wasnt 100% sure, but i remembered some formulas i had learnt in previous years, and chucked some things together. What i did was:

[tex]

\displaylines{

E_p = mgh \cr

= (202)(9.8)(2.7) \cr

= 5344.92J \cr

P = \frac{E}{t} \cr

= \frac{{5344.92}}{{1.7}} \cr

= 3144.07W \cr}

[/tex]

Not sure if its even close to being right, but it was worth a try atleast. Could someone please tell me what i should have done.

Thanks,

Dan.