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Engineering ToolBox > Body Forces on Inclined Planes
Neglecting the friction the force required to move a body up an inclined plane can be expressed with the formula
Fp = W h/l
= W sin α (1)
where
Fp = pulling force (N, lbf)
W = m g = weight of body (N, lbf)
h = elevation (m, ft)
l = length (m, ft)
α = elevation angle (degrees)
m = mass of body (kg, slugs)
g = acceleration of gravity = 9.81 (m/s2) = 32.174 (ft/s2)
Adding friction (1) can be modified to
Fp = W (sin α + μ cos α) (2)
where
The calculator below can be used to calculate required pulling force to move a body up an inclined plane.