Recent content by netone

oh ok ,so it would just be 3400 then. Thanks for your help!

soo, 170 rads/s then?

3 rads/s^2

Homework Statement . The angular speed of an automobile engine is increased at a constant rate from 140 rad/s to 200 rad/s in 20 s. The number of radians through which the engine turns during this 20-s interval is Homework Equations The Attempt at a Solution I didnt know...

ooh ok, I didn't realize that 1 watt = 1 joule per second, that helped out quite a bit. Thanks so much for the response!

Power to lift* a piano A piano of mass 200 kg is lifted vertically by a 0.5 hp motor. Given that 746 watt = 1 hp, how long will it take the motor to lift the piano to an apartment that is 20 m above the ground? Not really sure how to start this question, so any explanation would be greatly...