Work, Power and EnergyHard
Question
A particle which is constrained to move along the x-axis is subjected to a force in the same direction which varies with distance x of the particle from the origin as F(x) = - kx + ax3. Here, k and a are positive constants. For x ≥ 0, the functional form of the potential energy u(x) of the particle is, fig.
Options
A.

B.

C.

D.

More Work, Power and Energy Questions
A bullet of mass m and velocity v is fired into a large block of wood of mass M. The final velocity of the system is :-...A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle,...A frictionless steel ball of radius 2cm, moving on a horizontal plane with a velocity of 5cm/s, collides head-on with an...A uniform force of newton acts on a particle of mass 2 kg. Hence the particle is displaced from position meter to positi...A satellite with kinetic energy Ek is revolving round the earth in a circular orbit. How much more kinetic energy should...