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4 marksTurning Forces

CSEC Physics · January 2017 · Paper 2 · Question 3(a)(i)

Fill in the blanks in the following passage about the moments of forces. The _______________ of moments states that when a body is in equilibrium the sum of the _______________ about any _______________ is equal to the sum of the _______________ about the same _______________.

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Other parts of this question

  1. 3(a)(ii)Apart from the 'seesaw', identify TWO situations in which a force will result in a turning effect.[2 marks]
  2. 3(b)(i)By taking moments about the pivot, calculate the distance, x, that Keion must sit from the pivot to balance the plank if Kyle sits 1 m from one end of the…[4 marks]
  3. 3(b)(ii)If balanced, calculate the reaction force at the pivot.[4 marks]
  4. 3(b)(iii)What is the moment of the reaction force about the pivot?[1 mark]

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