- #1
MisterP
- 47
- 3
Homework Statement
To lift a box it needs 250N force (F). How much work (A) has to be done to lift it at height (h) 1.2m and to slide it horizontaly (l) 1.2m. Coefficient of friction is 0.2 (μ)
F = 250N
h = 1.2m
l = 1.2m
μ = 0.2
A = ? on both situations
2. Homework Equations
A = F * h
A = F * l * μ
The Attempt at a Solution
A (when box has to be lifted) = 250 * 1.2 = 300 J (Joules)
A(when box has to be slided) = 250 * 1.2 * 0.2 = 60J
Is this right?
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