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Module 2 Forces in Action

Module 2 Forces in Action. Forces in Equilibrium. Forces in Equilibrium. You should be able to: draw and use a triangle of forces to represent the equilibrium of three forces acting at a point in an object. analyse unfamiliar situations so that you can draw a vector triangle.

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Module 2 Forces in Action

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  1. Module 2 Forces in Action Forces in Equilibrium

  2. Forces in Equilibrium You should be able to: • draw and use a triangle of forces to represent the equilibrium of three forces acting at a point in an object. • analyse unfamiliar situations so that you can draw a vector triangle. • resolve force vectors into horizontal and vertical components.

  3. Forces in Equilibrium Resolving Forces Vertically & Horizontally What are the horizontal and vertical components of these forces ( scale – one square = 1 Newton )

  4. Forces in Equilibrium Resolving Forces Vertically & Horizontally

  5. Forces in Equilibrium Resolving Forces Vertically & Horizontally

  6. Forces in Equilibrium Resolving Forces Vertically & Horizontally

  7. Forces in Equilibrium Resolving Forces Vertically & Horizontally When is the weight most difficult to support and why?

  8. Forces in Equilibrium The Triangle of Forces

  9. Forces in Equilibrium The Triangle of Forces

  10. Forces in Equilibrium The Triangle of Forces

  11. N F W q Forces in Equilibrium Object on a Slope

  12. Forces in Equilibrium

  13. Forces in Equilibrium

  14. Forces in Equilibrium

  15. Forces in Equilibrium

  16. N F 3.4 N 25o Forces in Equilibrium Calculate (a) the normal reaction, N, and (b) the horizontal force, F.

  17. Forces in Equilibrium (a) The total mass of the performer plus props is 76.5 kg. Using a scale of 1 cm to 100 N, draw a vector triangle to show the forces acting on the performer. (b) Use your diagram to find the tensions T1 and T2 in the cable. (c) A member of the audience is worried that the cable might break, and thinks that this would be less likely to happen if the cable were shorter so that it did not sag so much. Explain, with the aid of a diagram, whether this would really reduce the tension in the cable.

  18. Centre of Gravity • Define the centre of gravity of an object. • Describe a simple experiment to determine the centre of gravity of an object.

  19. Centre of Gravity

  20. Centre of Gravity • Define the centre of gravity of an object. • Describe a simple experiment to determine the centre of gravity of an object.

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