Physics Power and Energy Problem Sheet (1 of 2)

[281MeXiCaN713]

THIS HELPED ALOT!!

thanks!

my teacher doesnt even explain...

[googagaz]

No problem... yah I guess I was wrong, but good video I'm suprised it doesn't have more views... I watched this the night before a Science test... Thanks for the help!

[mrlovescience]

Glad it was useful!

[googagaz]

It does not take it 500n to lift it straight up to 3m... It takes 1500 Joules to lift it to an altitude of 3m... ( 2:35 )

[mrlovescience]

@googagaz Hey, thanks for checking out my video. The question I think you were referring to asked how much force was necessary to move the box up the incline with the mechanical advantage. I showed the force necessary to lift it straight up for comparison. You are correct about the PE, but that wasn't what the question was asking.

-Jim