Summary Simple harmonic motion is any motion where the acceleration of restoring force is directly proportional to its displacement. Simple harmonic motion is defined by the formula acceleration  . The period of oscillation in simple harmonic motion is given by the formula  . Simple pendulum is also a simple harmonic motion as we showed that … Read more

Summary Restriction to a motion is known as Frictional Force. Limiting Equilibrium is when frictional contact force is maximum, which happens when the object is at the point of sliding or moving. The magnitude of the limiting friction bears a constant ratio  ,  to the normal contact force R. For General equilibrium  For Limiting equilibrium  … Read more

Summary Work Done = FD cos () where F is the Force applied to an object, D is the distance moved by the object and    is the angle at which the force is applied. The energy of a body is its capacity for doing work. i)  ii)  Power is the rate of doing work … Read more

Summary Five constant acceleration equations: Acceleration of free falling object 9.8   Revision of basic concept of Kinematics To start off with we revise a few basic concepts involved in kinematics:  Distance: It is the length of a given path covered by a moving particle. It is a scaler quantity and it is measured in … Read more