- #1
Destrio
- 212
- 0
3. A 52.3-kg trunk is pushed 5.95m at constant speed up a 28.0 degree incline by a constant horizontal force. The coefficient of kinetic friction between the trunk and the incline is .19 . Calculate the work done by a) the applied force and b) the force of gravity.
Fy = N - mgcos28 = 0
Fx = Fcos28 - f - mgsin28 = 0
Fx = Fcos28 - ukN - mgsin28 = 0
Fx = Fcos28 - ukmgsin28 - mgsin28 = 0
F = 282.74N
W = F*d
W = 282.74N * 5.95m = 1682.3 J
where am I going wrong?
thanks
Fy = N - mgcos28 = 0
Fx = Fcos28 - f - mgsin28 = 0
Fx = Fcos28 - ukN - mgsin28 = 0
Fx = Fcos28 - ukmgsin28 - mgsin28 = 0
F = 282.74N
W = F*d
W = 282.74N * 5.95m = 1682.3 J
where am I going wrong?
thanks