What is the power output of an electric motor
that lifts a 2.0-kilogram block 15 meters
vertically in 6.0 seconds?
(1) 5.0 J (3) 49 J
(2) 5.0 W (4) 49 W

Question

lis2onjigivni lis2onjigivni

02-01-2016
Physics

contestada

What is the power output of an electric motor
that lifts a 2.0-kilogram block 15 meters
vertically in 6.0 seconds?
(1) 5.0 J (3) 49 J
(2) 5.0 W (4) 49 W

Respuesta :

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taskmasters taskmasters · Answer 1 · 2016-01-02T18:41:50+01:00

Mass of the block = 2.0 kg
Value of gravity = 9.81 m/s^2
Distance upto which the mass is lifted = 15 meters
Time taken to lift the mass of the block = 6.0 seconds
Now we already know
Work Done = Mass * Gravity * Distance
   = 2 * 9.81 * 15
   = 294 Joules
Then
Power Output = Work Done/Time
   = 294/6
   = 49 Watts
So the power output of the electric motor is 49 watts.The correct option among all the options given in the question is option "4".

What is the power output of an electric motor that lifts a 2.0-kilogram block 15 meters vertically in 6.0 seconds? (1) 5.0 J (3) 49 J (2) 5.0 W (4) 49 W

Respuesta :

Otras preguntas

What is the power output of an electric motor
that lifts a 2.0-kilogram block 15 meters
vertically in 6.0 seconds?
(1) 5.0 J (3) 49 J
(2) 5.0 W (4) 49 W