Define work and show that it is the dot product of force and displacement. At work conditions work done will be maximum or minimum?
Define power and show that power is the dot product of force and velocity. What are the different units of power used in our daily life.
Explain the work energy principle in the case of change in the K.E of body?
Prove that Absolute P.E = (GmMe)/Re.
Calculate the value of the escape velocity of a body and show that it is equal to 11.2 km/s.