An aeroplane can fly at a velocity X when moving through still air.

Q#9 ( Past Exam Paper – November 2016 Paper 11 & 13 Q3 ) An aeroplane can f… Read more An aeroplane can fly at a velocity X when moving through still air.

Power

Often it is interesting to know not only the work done on an object, but also t… Read more Power

Various Forms Of Energy : The Law Of Conservation Of Energy

In the previous section we have discussed mechanical energy. We have seen that … Read more Various Forms Of Energy : The Law Of Conservation Of Energy

The Potential Energy Of A Spring

The spring force is an example of a variable force which is conservative. Fig. … Read more The Potential Energy Of A Spring

The Conservation Of Mechanical Energy

For simplicity we demonstrate this important principle for one-dimensional moti… Read more The Conservation Of Mechanical Energy

The Concept Of Potential Energy

The word potential suggests possibility or capacity for action. The term potent… Read more The Concept Of Potential Energy

The Work-Energy Theorem For A Variable Force

We are now familiar with the concepts of work and kinetic energy to prove the w… Read more The Work-Energy Theorem For A Variable Force

Work Done By A Variable Force

A constant force is rare. It is the variable force, which is more commonly enco… Read more Work Done By A Variable Force

Kinetic Energy

As noted earlier, if an object of mass m has velocity v , its kinetic energy K … Read more Kinetic Energy

Work

As seen earlier, work is related to force and the displacement over which it ac… Read more Work