explain, with examples, that to stretch, bend or compress an object, more than one force has to be applied
explain, with examples, that to stretch, bend or compress an object, more than one force has to be applied
describe and use the particle model to explain the difference between elastic and plastic deformation caused by stretching forces
a) describe the relationship between force and extension for a spring and other simple systems
b) describe how to measure and observe the effect of forces on the extension of a spring PAG2
describe the difference between the force-extension relationship for linear systems and for non-linear systems
recall and apply the relationship between force, extension and spring constant for systems where the force-extension relationship is linear:
force exerted by a spring (N) = extension (m) × spring constant (N/m)
a) calculate the work done in stretching a spring or other simple system, by calculating the appropriate area on the force-extension graph
b) describe how to safely use apparatus to determine the work done in stretching a spring PAG2
select and apply the relationship between energy stored, spring constant and extension for a linear system:
energy stored in a stretched spring (J) = ½ × spring constant (N/m) × (extension (m))2