Physics (AS & A Level) · Feb / March 2016 · Paper 22 · Question 3
9702
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3(a)(i)[1]
(work =) force × distance moved in the direction of the force.
3(a)(ii)[1]
the energy stored (in an object) due to extension / compression / change of shape
3(b)(i)[2]
EK = ½mv 2 = 0.5 × 0.40 × 0.302 = 1.8 × 10–2 (J)
3(b)(ii)[3]
(change in) kinetic energy = work done on spring / (change in) elastic potential energy C1 1.8 × 10–2 = ½ × F × 0.080 FMAX = 0.45 (N)
3(b)(iii)[1]
a = F / m = 0.45 / 0.40 = 1.1 (m s–2)
3(b)(iv)[2]
1. constant velocity / resultant force is zero, so in equilibrium 2. decelerating / resultant force is not zero, so not in equilibrium
3(c)[2]
curved line from the origin with decreasing gradient
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