Forces And Elasticity (GCSE Physics)

Which expression gives the spring constant k for a spring stretched by a force F producing an extension x?

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

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

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

Which equation defines pressure p applied uniformly over area A by a force F?

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.

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:

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

A spring with spring constant 200 N/m is stretched 0.10 m. How much elastic potential energy is stored in the spring?

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

Two identical bungee cords each have spring constant 735 N/m and each is stretched by 8.0 m when a pod is released. The pod plus rider has mass 240 kg. Assuming no energy losses, what is the maximum rise (height gained) the pod achieves (in m)?