The extension of a spring is directlyproportional to the force applied, provided that the limit of proportionality is not exceeded.
What is a Force?
A force is a push or pull that acts on an object due to the interaction with another object.
What is the equation for Hooke's Law
F = K x E
What is the word equation for Hooke's Law?
Force = Spring Constant x Extension
What is Force measured in?
Newtons(N)
What is Spring constant measured in?
Newtons per metre (N/m)
What is extension measured in?
Metres(M)
What is it called when the objects are physically touching?
Contact force
What is it called when objects aren't phsyically touching?
Non contact force
What do you measure when investigating Hooke's Law?
Extension
extension = stretchedlength – originallength.
What is required for the Hooke's Law practical?
A steel spring, a 100g mass hanger, 12, 100g masses, a retort stand, a boss and clamp, a clamp, a metre rule, an s-hook, a pointer, safety goggles, a slotted base.
A Vector has magnitude and direction
A Scalar has just magnitude
Give 3 examples of contact forces
Friction, Air resistance, Tension
Give 3 examples of non contact forces
Magnetic Forces, Gravitational forces and electrostatic force