Forces And Elasticity (GCSE Physics)

A wire stretched from length L to L+?L has strain defined as:

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)

Two identical springs, each with spring constant 200 N/m, are connected in series. What is the effective spring constant of the combination?

Two identical springs in parallel support a mass m and produce the same extension x as one spring supporting the same mass would produce. Which statement is correct for two parallel springs compared with one spring of the same k?

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

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

A wire obeying Hooke’s law is used as a spring. If the extension doubles under a larger load, the elastic potential energy stored (1/2 k x^2) will:

When two identical springs support a mass m in parallel and give extension x, what is the extension compared with using one spring supporting the same mass?

The gradient of a force versus extension graph for a spring gives:

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 student measures force–extension for a spring and obtains a straight line through origin up to a point, and beyond that the graph curves. The point where linearity ends is called the: