A-LevelPhysicsForces, density and pressure9702/12 · May/June 2011 · Q171 Mark

The diagram shows two fixed pins, Y and Z. A length of elastic is stretched between Y and Z and around pin X, which is attached to a trolley. X is at the centre of the elastic and the trolley is to be propelled in the direction P at right angles to YZ. The tension in the elastic is 4 N. What is the force accelerating the trolley in the direction P when the trolley is released?

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A2.4 N

B3.2 N

C4.8 N

D6.4 N

✓ Correct answer

C: 4.8 N

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Topic: Forces, density and pressure, A-Level Physics (syllabus 9702). Multiple choice, 1 mark.
Source: A-Level Physics, May/June 2011 Paper 1 Variant 2, question 17.

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