Forces And Elasticity (GCSE Physics)

Two identical springs, each with spring constant 300 N/m, are connected in parallel and both support the same load. What is the effective spring constant of the pair?

The limit of proportionality on a force–extension graph is the point where:

If a body is in equilibrium under several forces, the resultant (net) force on it is:

A spring obeying Hooke’s law when stretched means the extension of the spring is directly proportional to the applied force.

A spring stores 4.0 J of elastic potential energy when stretched by 0.080 m. What is the spring constant k (N/m)?

A block attached to a spring is stretched and the work done (area under force–extension) is 2.0 J. If the spring constant is 100 N/m, what was the extension x? (Use 1/2 k x^2 = 2.0)

Which sign is used in Hooke’s law F = -k x to indicate the spring force’s direction relative to displacement?

To increase the moment produced by a given force about a pivot without changing the force magnitude you should:

A material has Young’s modulus E defined as stress / strain. If a wire of original length 1.0 m extends by 1.0 mm under a given load, what is the strain?

A spring stretches by 0.05 m under a load of 10 N. What is its spring constant (to the nearest N/m)?

Which graph of force (vertical axis) against extension (horizontal axis) shows a spring obeying Hooke’s law?