Question

A mule is harnessed to a sled having a mass of 211 kg, including supplies. The mule must exert a force exceeding 1250 N at an angle of 30.3° (above the horizontal) in order to get the sled moving. Treat the sled as a point particle.

HINT

(a)

Calculate the normal force (in N) on the sled when the magnitude of the applied force is 1250 N. (Enter the magnitude.)

 N

(b)

Find the coefficient of static friction between the sled and the ground beneath it.

(c)

Find the static friction force (in N) when the mule is exerting a force of 6.25 ✕ 10² N on the sled at the same angle. (Enter the magnitude.)

 N

Answer 1