A particle is projected vertically up with velocity v=(4gRe/3)1/2 from earth surface. The velocity of particle at height equal to half of the maximum height reached by it .....?
Determination of maximum height:
Potential energy + Kinetic energy at the surface = Potential energy at the maximum height
Total energy at the surface = Total energy at the half of maximum height:
Potential energy + Kinetic energy at the surface = Potential energy at the maximum height
Total energy at the surface = Total energy at the half of maximum height: