Engineering Mechanics 2, work power, energy
Work, Power and Energy : Work : Work is a product of applied force and displacement in the direction of force W = FxD where F is applied force and D is displacement in the direction of force Unit : F - N, D - m then W = Nm = Jule Displacement : Displacement is a vector quantity, it can be positive or negative. If a body starts its motion from a point and move in a zigzag path then the total length of the path is known as "Distance" and the shortest distance between the start and end point is known as "Displacement". Engineering Mechanics Power : Rate of work done per unit time is known as Power. P = W/t = FxD/t = Fx v , ( v is velocity ) Unit : Nm/sec = Jule/sec= Watt. Energy : Energy is the capacity of body to do work. Unit of Energy = Jule General types of energy :- Kinetic Energy Potential Energy Nuclear Energy Chemical Energy Electrical Energy Solar Energy Kinetic Energy : The energy due to motion of a body is known as Kinetic Energy (KE) KE = mv 2 /...