24 results found for university-of-new-south-wales

The inverse square law explains planetary motion - and apples falling. Newton's law, measuring G, calculating orbits.

Torques produce angular acceleration, moment of inertia 'resists' it. Rotational kinetic energy and angular momentum.

p=mv. If external forces are zero, momentum is conserved. In collisions, energy may be conserved (elastic) or not (inelastic).

In finite objects, the total external force equals the total mass times the acceleration of a point called the centre of mass.

The total work done on an object equals the increase in its kinetic energy. For conservative forces, we can define potential energy.

Carefully distinguish mass and weight. Hooke's law quantifies deformation. Contact forces have normal and frictional components.

F=ma (laws 1&2). Forces come in pairs that add to zero (3). Newton's laws apply in inertial frames of reference. Some common approximations made in applying them.

In simple harmonic motion, displacement, velocity and acceleration vary sinusoidally with time, but with different phases.

Uniform circular motion: angular displacement and velocity are introduced and centripetal acceleration is determined.

Motion with uniform acceleration, such as in a uniform gravitational (or electric) field is projectile motion, analysed here with examples.

Kinematics quantifies motion without explaining the causes of it. Here we study accelerations that are zero, positive or negative.

How extending Galileo's relativity to magnetism leads to Einstein's relativity, time dilation, length contraction, relativity of simultaneity and E=mc2 .