TEST OF PRACTICAL KNOWLEDGE QUESTION Fix the 100g mass marked P at B, the 80 cm mark of the uniform metre rule, using an adhesive. Suspend another 100g mass...

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TEST OF PRACTICAL KNOWLEDGE QUESTION


  1. Fix the 100g mass marked P at B, the 80 cm mark of the uniform metre rule, using an adhesive.
  2. Suspend another 100g mass marked Q at A, a distance V = 10.Ocm from the 0 cm mark of the metre rule.
  3. Balance the whole arrangement horizontally on a knife edge as shown in the diagram above.
  4. Measure and record the distance U of K from the 0 cm mark of the metre rule.
  5. Repeat the procedure for five other values of V = 15.0, 20.0, 25.0, 30.0 and 35.0 cm
  6. In each case, measure and record the Corresponding values of U. Tabulate your readings.
  7. Plot a graph of U on the vertical axis against V on the horizontal axis.
  8. determine the:
    (1) slope, s, of the graph
    (2) intercept c, on the vertical axis.
  9. Evaluate (i) K\(_{1}\) =\(\frac{(1 - 2s)}{s}\) 100:
                  (ii) K\(_{2}\) = \(\frac{2c}{s}\) - 160
  10. State two precautions taken to ensure an accurate result

(b)i. State two conditions under which a rigid body at rest remains in equilibrium when acted upon by three non-parallel coplanar forces.

ii. Explain how the position of the centre or gravity of a body affects the equilibrium of the body.

 

 

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