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Physics

Classical Mechanics Concepts

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Conservation of Momentum

The total momentum of a closed system is conserved unless acted upon by external forces.

Impulse

J = F\Delta t = \Delta p

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 an unbalanced force.

Newton's Second Law

F = ma

Work

W = Fd \cos(\theta)

Potential Energy

PE = mgh

Angular Momentum

L = I\omega

Mechanical Advantage

The ratio of the output force to the input force in a system.

Centripetal Force

F_c = \frac{mv^2}{r}

Gravitational Force

F_g = G\frac{m_1m_2}{r^2}

Power

P = \frac{W}{t}

Kinetic Energy

KE = \frac{1}{2}mv^2

Torque

\tau = Fr\sin(\theta)

Hooke's Law

F = -kx

Newton's Third Law

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

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