A force of 7000N is applied to drag a 500 kg cow across a flat level floor to McSlaughter House. The cow has an acceleration of 2.5 m/s2.

(a) what's the weight of the cow?
(b) what is the normal force acting on the cow?
(c) What is the resultant force that causes the cow to accelerate?
(d) Is the friction acting on the cow Static or Kinetic?
(e) What is the coefficient of friction?

1 answer

(a) w = m g

(b) equal to weight

(c) f = m a = 500 * 2.5

(d) moving (kinetic)

(e) k = (7000 - 1250) / (m g)