Mechanical Engineering

Volumetric strain is the change in volume of a body divided by its original volume: ev = ΔV / V. It is a pure…Read More →

The shear modulus, also called the modulus of rigidity and written G, is the ratio of shear stress to shear strain within the elastic…Read More →

The parallelogram law of forces states that if two forces acting at a point are represented in magnitude and direction by the two adjacent…Read More →

The moment of a force is the turning effect that force produces about a point or an axis, and it equals the force multiplied…Read More →

The perpendicular axis theorem states that for a plane lamina, the moment of inertia about an axis perpendicular to the plane of the lamina…Read More →

The strain formula is strain (ε) = change in length / original length = ΔL / L. Strain measures how much a body deforms…Read More →

Lami’s theorem states that if three coplanar, concurrent forces act on a body and keep it in equilibrium, each force is proportional to the…Read More →

Joule’s law of heating states that the heat produced in a current-carrying conductor is directly proportional to the square of the current, to the…Read More →

LASER stands for Light Amplification by Stimulated Emission of Radiation. A laser is a device that makes a narrow, intense beam of light of…Read More →

The relationship between linear velocity and angular velocity is v = ωr. The linear (tangential) velocity of any point on a rotating body equals…Read More →

Boilers are classified first by what flows inside the tubes: in a fire-tube boiler hot gases pass through tubes surrounded by water; in a…Read More →