A particle is projected making an angle of 45^o with horizontal having kinetic energy K. The kinetic energy at highest point will be

Two springs A and B having spring constant K_A and K_B (K_A = 2K_B) are stretched by applying force of equal magnitude. If energy stored in spring A is E_A then energy stored in B will be

A disc is rolling, the velocity of its centre of mass is v_cm. Which one will be correct?

The current in the circuit will be