1. Ch. 5 slides.ppt
Forces.ppt

2. Component equations
Write down the Newton’s 2nd law component equations for the following free body diagram
Forces.ppt

3. Elevator
A 1000-kg elevator hangs from a rope. Find the tension in the rope for each of the following situations (include a motion diagram, identify the forces, and draw a free body diagram on your way to the solution):
The elevator is stationary.
The elevator is moving upward at a steady speed of 5 m/s.
The elevator is accelerating upward at 5 m/s2.
The elevator is accelerating downward at 5 m/s2
Forces.ppt

4. Train accelerometer
A ball (mass m) hangs from a string (length L) inside a train car. The train car is moving forward with an acceleration, a0.
For the ball
draw a motion diagram
draw a free-body diagram with axes indicated
if possible, find the relationship between , a0, m, and g.
Forces.ppt

5. Barry Pushes Box
Barry pushes a 2000 Newton box at a steady 4 m/s along a horizontal wooden floor. If Barry pushes on the box with a 150 Newton force in a direction 30° below the horizontal, what is the force of friction on the box (include a motion diagram, identify the forces, and draw a free body diagram on your way to the solution)?
Forces.ppt

6. Block on Incline similar to Problem 5-16
A 1000 Newton box sits on a wooden incline. The incline makes a 30° angle with the horizontal. What friction force will keep the box from sliding (include a motion diagram, identify the forces, and draw a free body diagram on your way to the solution)?
Forces.ppt