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4 marksTurning Forces

CSEC Physics · January 2012 · Paper 2 · Question 1(f)(i)

The weight of the plasticine, Wp, is related to the weight of the 50 g mass, Wm, by the formula, Wp = gradient × Wm. Determine the weight of the plasticine, Wp.

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Other parts of this question

  1. 1(a)Complete Table 1 by calculating the values of x and y.[3 marks]
  2. 1(b)Use the results from the completed Table 1 to plot a graph of y/cm against x/cm, on the graph paper provided on page 3.[6 marks]
  3. 1(c)From your graph, calculate the slope, z.[5 marks]
  4. 1(d)Use your graph to determine how far the 50 g mass needs to be placed if it balances when the plasticine was placed 27.5 cm from the pivot, R.[1 mark]
  5. 1(e)State the Principle of Moments.[4 marks]
  6. 1(f)(ii)Calculate the mass of the plasticine, Mp. [g = 10 N kg⁻¹][2 marks]

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