How Much Time Does It Take to Lift a 300 kg Piano 10 Meters?

[PhunWithPhysics]

I have a 300 kg piano being lifted at a steady speed from the ground to a hieght of 10 meters and the crane that is doing the lifting is providing 400 watts of power. How much time does it take to get the piano to the top.
So far I have Power = work/Time
so time is Work/ power , so, work is equal to mass X gravity X hieght
so I have (300)(9.8)(10)/(400) = 73.5 sec...is this correct...any help would be nice. Thanks

 

[Fermat]

Your work is correct. I get the same result.

 

[quicknote]

I must point out that the calculation provided is correct, assuming that the crane is providing a constant power output of 400 watts and there are no external factors affecting the lift. However, in real-world scenarios, there may be other factors that can affect the time it takes to lift the piano, such as friction, air resistance, and the efficiency of the crane. These factors would need to be taken into account for a more accurate calculation. Additionally, it is important to consider the safety protocols and limitations of the crane and the weight of the piano to ensure a successful and safe lift.