PhysicsLAB Practice Problems
Normal Forces

Directions: On this worksheet you will be asked to calculate the normal force depending on a variety of situations.

Question 1  What is the normal force acting on a 4-kg mass that is at rest on a horizontal surface?
Question 2  What is the normal force acting on a 4-kg mass that is sitting on the floor of an elevator which is accelerating upwards at a rate of 11 m/sec2?
Question 3  What is the normal force acting on a 4-kg mass that is sitting on the floor of an elevator which is accelerating downwards at a rate of 5.5 m/sec2?
Question 4  What is the normal force acting on a 4-kg mass that is being pulled up a 28º frictionless inclined plane at a constant velocity of 11 m/sec?
Question 5  What is the normal force acting on a 4-kg mass which is being pulled at a constant velocity of 11 m/sec by a rope having a tension of 42 newtons at an angle of 28º to the horizontal?
Question 6  What is the normal force acting on a 4-kg mass which is being pushed at a constant velocity of 11 m/sec by a force of 42 newtons along a rigid handle that makes an angle of 28º to the horizontal?


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