1. A horse is harnessed to a sled having a mass of 231 kg, including supplies. The horse must exert a force exceeding 1250 N at an angle of 36.3° (above the horizontal) in order to get the sled moving. Treat the sled as a point particle.
(a)Calculate the normal force (in N) on the sled when the magnitude of the applied force is 1250 N. (Enter the magnitude.)
(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 horse is exerting a force of 6.25 ✕ 102 N on the sled at the same angle. (Enter the magnitude.)
2. Consider the figure below.
(a) Find the tension in each cable supporting the 688-N cat burglar. (Assume the angle θ of the inclined cable is 38.0°.)
inclined cable - ???
horizontal cable - ???
vertical cable - ???
www.webassign.net/sercp9/4-p-017-alt.gif
1 answer
(a) The tension in the inclined cable is 545.2 N, the tension in the horizontal cable is 688 N, and the tension in the vertical cable is 545.2 N.
4 answers