NEET Questions

A spring of force constant 'k' is compressed by a distance 'x' and used to launch a block of mass 'm' up a frictionless incline of angle $heta$. What is the maximum distance 'd' the block travels along the incline before momentarily coming to rest?

A block of mass $M$ is placed on a smooth horizontal surface. A bullet of mass $m$ travelling with velocity $v$ strikes the block and gets embedded in it. The combined system now compresses a spring of spring constant $k$ attached to the block. If the maximum compression of the spring is $x$, the velocity $v$ of the bullet is:

An ideal spring with spring-constant K is hung from the ceiling and a block of mass M is attached to its lower end. The mass is released with the spring initially unstretched. Then the maximum extension in the spring is

A block of mass M is attached to the lower end of a vertical spring. The spring is hung from a ceiling and has force constant value k. The mass is released from rest with the spring initially unstretched. The maximum extension produced in the length of the spring will be

In which case does the potential energy decrease

A 2.0 kg block is dropped from a height of 40 cm onto a spring of spring constant $k = 1960\;{\rm{N}}{{\rm{m}}^{ - 1}}$ . Find the maximum distance the spring is compressed

A spring of 40 mm long is stretched by the application of a force. If 10 N force required to stretch the spring through 1 mm, then work done in stretching the spring through 40 mm

A spring of spring constant $5 imes {10^3}{\rm{N}}{{\rm{m}}^{ - 1}}$ is stretched initially by 5 cm from the unstretched position. Then the work required to stretch it further by another 5 cm is

The potential energy of a particle (${U_x}$) executing SHM is given by

When a ${\rm{4}}$ kg mass is hung vertically on a light spring that obeys Hook’s law, the spring stretches by ${\rm{2}}\,\,{\rm{cm}}$. The work required to be done by an external agent in stretching this spring by ${\rm{5}}\,\,{\rm{cm}}$ will be