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lovcullen
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Energy Calculation ~~help
Question )
An 800W electric motor is used to raise a load. In 120s, the load gains
24,000 J of gravitational potential energy from the motor
Calculate :
a) electrical energy supplied to the motor
b) energy wasted by the motor
c) output power of the motor
d) efficiency of the motor
W=J/s
I have no idea //
i've got a big school exam next Monday T-T
help me~
thank you
Homework Statement
Question )
An 800W electric motor is used to raise a load. In 120s, the load gains
24,000 J of gravitational potential energy from the motor
Calculate :
a) electrical energy supplied to the motor
b) energy wasted by the motor
c) output power of the motor
d) efficiency of the motor
Homework Equations
W=J/s
The Attempt at a Solution
I have no idea //
i've got a big school exam next Monday T-T
help me~
thank you