Mechanics

Torque due to a force: As discussed earlier, torque about a point due to a force is obtained as the vector product Last Updated: Friday, November 6, 2009

Equilibrium of Bodies In the static part when we say that a body is in equilibrium, what we mean is that the body is not moving at all even though there may be forces acting on it. (In general equilibrium … Continued

Derivative of a vector: After reviewing the vector algebra, we would now like to introduce you to the idea of differentiating a vector quantity. Here we take a vector as depending on one parameter, say time t , and evaluate … Continued

Geometric interpretation of cross product : The magnitude of the cross-product , which is equal to , is the area of a parallelogram formed by vectors . This is shown in figure. Last Updated: Friday, November 6, 2009