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 Physics Formulae
Units of Measurement

Acceleration:

It is defined as the rate of change of velocity.

Acceleration due to gravity:

Angular Displacement:

Angular momentum or moment of momentum L:

Angular velocity:

Coefficient of Friction:

Coefficient of Thermal conductivity k0:

Coefficient of viscosity: (η)

Force:

Force =mass ´ acceleration = m ´ a

F = (M) ´(LT-2) = (MLT-2)

So, dimension of mass is 1 and that of length is +1and that of time is –2 in force.

Gravitational constant:

According to Newton universal law of gravitation.

Heat:

Heat is a form of energy.

Q = [ML2T-2]

Impulse:

Kinetic Energy (K.E.):

Latent Heat:

Heat absorbed per unit mass during changed of state.

Momentum:

Moment of a force of torque of moment of a couple:

Moment of Inertia:

Moment of inertia = mass × (length)2 = [ML2]

I = [ML2]

Planck’s constant:

Power:

Potential Energy (P.E.):

Pressure:

Specific Heat:

Thermal capacity for unit mass of the body.

Speed

So, dimension of length is +1 and of time is –1 in velocity and speed.

Stress : =

Surface Tension:

Thermal Capacity:

The amount of heat energy required by a body for unit rise of temperature.

Velocity:

Work of energy:

Work = force × displacement = F × s

W =(MLT-2) × (L) = (ML2T-2)

Young modulus (Y):