Ch. 5 slides.ppt Forces.ppt.

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Presentation transcript:

Ch. 5 slides.ppt Forces.ppt

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

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

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

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

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