Tag:
Circular Motion
Circular motion refers to motion along a curved path e.g., a roundabout. Suppose an object moving along a circular path of radius r covers a distance s represented by the arclength AB (a section of the circumference of a circular path of a circle is referred to as arclength), sweeping an angle about the center O....read more.
Dr. Margaret W. Chege
Upthrust, Viscosity and Terminal Velocity
Objects float if they are less dense than, or of equal density with, the fluids (liquids and gases) they occupy. For example, while steel is denser than water, a steel ship can be made to float by introducing air-filled chambers which reduce the density of the ship relative to that of water. Floating bodies usually have part (or all) of their bodies in the liquid and as a result experience an upward force called upthrust (or buoyant force). Consider for instance an object of mass m, cross-sectional area A and height h fully submerged in a liquid of density ρ....read more.
Dr. Margaret W. Chege
Pressure, Continuity and Bernoulli's principles
Pressure refers to the force a body exerts perpendicularly per unit surface area i.e....read more.
Dr. Margaret W. Chege
Linear Motion, Newton's Laws, Friction
When an object moves along a line, it is said to undergo linear motion. If it moves along a circular path or a bend, it is said to undergo circular or rotational motion. If the object moves to-and-fro about a mean position, it is said to undergo vibratory or oscillatory motion. ...read more.