an elevator weighs 8000N. It leaves the main floor and arrives to the 15th floor which is 45 meters high. How much work was done by the motor
assuming 100 percent efficiency?
work=8000*45 Joules
8888856549++1108888888885959*8*59888969858298+
dck
To calculate the work done by the motor in lifting the elevator, we need to use the formula:
Work = Force x Distance
In this case, the force is the weight of the elevator (8000 N) and the distance is the height of the 15th floor (45 meters).
Therefore, the work done by the motor can be calculated as follows:
Work = 8000 N x 45 m
To find the answer, we can multiply these two numbers together:
Work = 360,000 Joules
So, the motor does 360,000 Joules of work in lifting the elevator from the main floor to the 15th floor.