Work done by horse:
= (friction force) x (distance)
= M*g*(0.25)(900 m)
= 140*9.8*0.25*900 = ___ joules
The work done by friction is minus the same number.
A 140 kg sleigh is pulled by one horse at a constant velocity for a distance of 0.90 km on a level snowy surface. The coefficient of kinetic friction between the sleigh runners and the snow is 0.25.
what is the work done by force?
what is work done by friction?
1 answer
1 answer