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3 Mechanics

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Question 77

Particles A A\,A and BBB, of masses 2 kg and 3 kg respectively, are attached to the ends of a light inextensible string passing over a small smooth fixed pulley. They are released from rest. The diagram shows the 1.2 m descent of B B\,B before the string breaks. Use g=9.8 m s−2g=9.8\text{ m s}^{-2}g=9.8 m s−2.

Figure for question 6

a.

Find the acceleration of the particles before the string breaks.

[3]
b.

Find the speed of A A\,A when the string breaks.

[2]
c.

Find the additional distance travelled upwards by A A\,A after the string breaks.

[2]
Markscheme

3 Mechanics Questions

  1. A Level
  2. /Maths
  3. /3 Mechanics

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