Work Energy and...

Minimum velocity of the particle is

if AB is a massless string.

When an arrow is released from a bow, potential energy changes into kinetic energy.

An object in a given position can have a certain potential energy with respect to one level and a different value of potential energy with respect to another level.

Velocity of particle when it is moving vertically downward is

A boy is whirling a stone tied at one end such that the stone is in uniform circular motion.Which of the following statement is correct?

A car is accelerated on a levelled road and attains a velocity 4 times of its initial velocity. In this process, the potential energy of the car

A mass is performing vertical circular motion (see figure). If the average velocity of the particle is increased, then at which point is the maximum breaking possibility of the string:

A stone of mass $$1\;kg$$ is tied to the end of a string of $$1\;m$$ long. It is whirled in a vertical circle. If the velocity of the stone at the top be $$4\;m/s$$. What is the tension in the string?

Two weights of 5 kg and 10 kg are placed on a horizontal table of height 1.5 m. Which will have more potential energy?