Forces And Elasticity (GCSE Physics)

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

A force of 2.0 N acts at a perpendicular distance of 7.5 cm from a pivot. What is the moment about the pivot?

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

What is meant by the elastic limit of a material?

If two springs in series are identical with constant k, the effective spring constant is:

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 beam is in equilibrium under several turning moments. This means the sum of clockwise moments equals the sum of anticlockwise moments about any pivot.

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

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)

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

Which formula gives the elastic potential energy stored in a stretched spring with spring constant k and extension x?