Physics laws

Archimedes' Principle

Upthrust = weight of fluid displaced

Hooke's Law

Force is proportional to extension, up to the limit of proportionality

Wien's displacement law

The peak wavelength at which the intensity of radiation from a black body is a maximum is inversely proportional to the absolute temperature of the black body

Principle conservation of momentum

Total momentum of a system remains the same before and after a collision

Principle of moments

For a body in rotational equilibrium, the sum of the anticlockwise moments about any point is equal to the sum of the clockwise moments about that same point

Principles of superposition of waves

When two similar types of waves meet at a point the resultant displacement at that point is equal to the sum of the displacements of the individual waves

Chandrasekhar's Limit

The maximum mass (~1.4 solar masses) where a white dwarf can remain stable; beyond this, it collapses into a neutron star or black hole.

Conservation of Charge

The total electric charge in an isolated system remains constant over time.

Newton's First Law

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by a force.

Newton's Second Law

F=ma

Newton's Third Law

For every action, there is an equal and opposite reaction.

Kirchhoff's Current Law (KCL)

The sum of currents entering any node is exactly equal to the sum of currents leaving the node.

Kirchhoff's Voltage Law (KVL)

The directed sum of the electrical potential differences (voltage) around any closed network is zero

Kepler's First Law

The orbit of every planet is an ellipse with the Sun at one of the two foci.

Kepler's Second Law

A line joining a planet and the Sun sweeps out equal areas during equal intervals of time.

The square of the orbital period of a planet is directly proportional to the cube of the semi