A-LevelPhysicsDynamics9702/12 · Oct/Nov 2017 · Q101 Mark
Two blocks of masses M and m are joined by a thin string which passes over a frictionless pulley, as shown. [Figure showing two blocks M and m connected by a string over a pulley] The acceleration of free fall is g. What is the acceleration a of the two blocks?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A(M + m) / (M - m) g
B(M - m) / (M + m) g
CM / m g
Dm / M g
✓ Correct answer
B: (M - m) / (M + m) g
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