Physics Semester 1

Question

Jake drags a sled of mass 10kg across the snow. The sled is attached to a rope that he pulls with a force of 30 N at an angle of 25 degrees. If there is no friction, what is the normal force acting on the sled?

Answer 1

gravity is down at 9.8 x 10kg = 98N

rope is up. The part that pulls up is 30sin25 = 12.67N

So net down is 98 - 12.67 = 85.3N