166k views
3 votes
A motor is used to lift a person sitting on a platform that, combined weighs 650 N. The platform is lifted 25.0 m straight up in 18.0 seconds. What power is developed by the motor in watts?

User Ctlacko
by
8.6k points

1 Answer

7 votes
A motor is used to lift a person sitting on a platform that, combined weighs 650 N. The platform is lifted 25.0 m straight up in 18.0 seconds. What power is developed by the motor in watts?

G:ivens: Force, F, displacement, s and time, t

U:nkowns: Power, P

E:quation: P = Fs/t

S:ubstitute P = (650 x 25)/18

S:olve P = 902 7/9 watts
User Bui Anh Tuan
by
8.5k points