Question

Sam is using a rope to pull a box weighing 300 N across a floor with constant velocity. The rope makes an angle of 30° above the horizontal. If the tension in the rope is 100 N, what is the normal force exerted by the floor on the box?

Answer 1

100* sin 30 and 300 N opposit direction

Answer 2

subtruction

Answer 3

300-50=250 N

Answer 4

We use components of the tension force before applying Newton's 2nd law in the vertical direction.