Elasticity and Hooke's Law (Leaving Cert Physics): Flashcards

Property of objects returning to original shape after applied force is removed

Boundary where objects become permanently deformed

$F = kx$

Measures stiffness of spring (in N m⁻¹)

Stiff spring, needs lot of force to stretch

Spring stretches easily

$E_p = \frac{1}{2}kx^2$

$W = \frac{1}{2}kx^2$

Four times (energy $\propto$ displacement squared)

KE is maximum, PE is zero

KE is zero, PE is maximum

Opposite direction to displacement

$k = \frac{F}{x}$ (gradient)

$x = \frac{mg}{k}$