A 4.0 kg toolbox is lifted vertically from the garage floor to a shelf 1.20 m high at…
PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power
Problem
A 4.0 kg toolbox is lifted vertically from the garage floor to a shelf 1.20 m high at constant speed. The free-fall acceleration may be taken as g=9.8m⋅s−2.
(a) Calculate the change in the gravitational potential energy of the toolbox–Earth system during the lift. Show your work and include units.
(b) Determine the magnitude of the work that must be done by the person on the toolbox. State any assumptions clearly.