(Solved): 2. A starf member of a moving company is pushing a grand piano across your living room at constant ...

2. A starf member of a moving company is pushing a grand piano across your living room at constant speed of \( 0.05 \mathrm{~m} / \mathrm{s} \). a) Determine the momentum of the piano if its mass is \( 350 \mathrm{~kg} \). b) Since you live on the \( 3^{\text {rd }} \) floor and the door of the apartment is not wide enough for the piano, the moving company decides to use your balcony and lower the piano using a crane. If your balcony is at \( 10 \mathrm{~m} \) above the ground level, what is the potential energy of the piano while hanging in your balcony. Consider \( \mathrm{g}=9.8 \mathrm{~m} / \mathrm{s}^{2} \).