Jonathan S. answered • 10/19/22
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Experienced High School Teacher Specializing in Science and Math
The question is asking how long (time = t) to lift the piano to the window. The information given in the problem is the power (P = 1750 W) of the motor, the mass (m = 305g) of the piano, the height (h = 16m) of the window, and you also need to know the acceleration due to gravity (g = 9.8 m/s2).
You can use the equation for gravitational potential energy (PE = m*g*h) to find the potential energy. And the equation for power (P = PE / t) to find the time it takes.
Hope this helps!
Jonathan S.
Yes, that is the answer I got.
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10/19/22
Bristan S.
Would it be 27.328 seconds?10/19/22