Physics 0625 · Question 1[7 marks]
A student carries out an experiment to investigate Hooke's Law for a steel spring.
(a)[2]
State Hooke's Law.
(b)[2]
Refer to the graph. Up to a load of 12.0 N, the extension is 6.0 cm. Calculate the spring constant k in N m⁻¹.
(c)[2]
Calculate the elastic energy stored in the spring at an extension of 6.0 cm.
(d)[1]
Describe what happens to the spring if loaded with 25.0 N, well beyond Point P.