Regular Class

1. A 1200 N car is broken down in the middle of the road. Jeff and Jim push the car with a combined force of 300 N. If the force of friction is 120 N, what is the net force acting on the car? Draw a free body diagram to represent this problem.
2. An airplane weighing 2500 N is flying due south. The force of thrust provided by the engine is 1350 N, the lift force generated is 2800 N, and the drag force is 600 N. Given this information, draw a free body diagram to represent the problem and determine the net force acting on the air plane?
3. Two players are attempting to kick a 70 N soccer ball. If the first player kicks the ball with a force of 250 N acting due west, what equilibrant force must the second player exert for the ball’s velocity not to change.

Level 1 Classes

4. A 1200 N car is broken down in the middle of the road. Jeff is pulling the car with a chain that makes a 30 degree angle with horizontal. If the tension force in the chain is 500 N and the force of friction is 120 N, what is the net force acting on the car? Draw a free body diagram, showing the value of each force acting on the car.
5. A sign weighing 500 N is suspended by two springs. The first spring produces a force of 200 N acting 30 degrees above the horizon. The second spring also produces a force of 200 N acting 120 degrees above the horizon. Draw a free body diagram to represent this problem. Determine the equilibrant force that if applied would produce equilibrium.
6. A 700 N crate is sliding at a constant velocity down a loading ramp that makes an angle of 15 degrees with the horizontal. Draw a free body diagram showing the value of each force acting on the crate. Determine the net force acting on the crate.