Elastic PE and gravitational PE

Explain gravitational PE and derive its formula.

Differentiate between gravitational potential energy and elastic potential energy.

A metallic spherical shell has mas m , radius R and Bulk modulus of elasticity B . The change in radius of the shell due to gravitational pressure

A particle falls from rest under gravity. Its potential energy with respect to the ground (PE) and its kinetic energy (KE) are plotted against time (t). Choose the correct graph.

A particle falls from rest under gravity. Its potential energy with respect to the ground (PE) and its kinetic energy (KE) are plotted against time (t). Choose the correct graph.

Prove that the frequency of oscillation of an electric dipole of moment p and rotational inertia I for small amplitudes about its equilibrium position in a uniform electric field strength E is 1/(2pi) sqrt(((pE)/I))

An object can have elastic PE when it is .........

BD is the disector of angle ABC. From a point P in BD, perpendiculars PE and PF are drawn to AB and BC respectively, prove that : (i) Triangle BEP is conguent to triangle BFP (ii) PE=PF.

Draw a graph to show the variation of PE, KE and total energy of a simple harmonic oscillator with displacement.

If a body of mass 200 g falls a height 200 m and its total P.E. is converted into K.E. at the point of contact of the body with earth surface. Then what is the decrease in P.E. of the body at the contact. (g=10m//s^(2))