Is this right?
When a 5 kg box is lifted 3 meters from the ground, calculate the gravitational potential energy stored in the box. Calculate the work done by a Force to lift the box at a constant speed. Compare this answer to the amount of gravitational potential energy stored in the box. What conclusions can you draw from this? What would happen if you did more work lifting the box than what was stored as gravitational potential energy?
ΔUg= mg Δy
ΔUg= (5kg)(-9.8 m/s^2)(3m)
ΔUg= -147J ( gravitational potential energy)
Calculate work:
W= F * D
= (5kg)(-9.8 m/s^2)
=-49 J
1 answer
What happened to the distance part of your work eq?
2 answers