Question

A motor requires 400. joules of energy to lift a 5.0 kg mass 2.0 meters. Calculate the efficiency of this motor

Answer 1

what do you think the answer is?

Answer 2

well im sure its not 25% @quinton1011

Answer 3

okay

Answer 4

is there any answer choices?

Answer 5

hello?

Answer 6

energy input = 400 J
energy output = 98 J (from problem 2)

efficiency = (energy output / energy input) * 100
efficiency = (98 / 40) * 100 = 24.5%
medal if helped

Answer 7

sorry the answers were 25%, 12% and 10%. So you got 25%? thanks

Answer 8

@Quinton1011 don't just give the answer away...

Answer 9

from where u taken o/p is 98???

Answer 10

The answer is 25%