Physics

Elastic Force When a spring is expanded by pulling, it appears that the spring pulls our hands in opposite direction. This type of reaction force…

Work done by a Constant Force The work done by a constant force is proportional to the force applied times the displacement of the object.…

Workless Force If component of displacement along the direction of force is considered instead of considering applied force along displacement, then according to figure, W…

Transformation of Energy Energy is present in different forms in this universe. Different forms of energy are related to one other. It is possible to…

Energy is the capability to do work. Energy comes in diverse forms: Heat (thermal), Light (radiant), Motion (kinetic) etc. Energy is defined as ability to…

Work Done by the Force If a force is applied on a moving football along its direction of motion, then the football moves towards the…

Work done against the force A person has lifted a bag of rice on his head from the ground. Again, a book has been lifted…

When a body can work, it is considered that it has energy. Energy is measured by the total amount of work that a body can…

Causes for Work Done and Work not Done (i) Earth is rotating around the sun, the direction of displacement of the earth at any time…

Graphical representation of work A graph is drawn by taking component of applied force along y-axis and displacement along x-axis {Fig (a)]. Area underneath this…