Press "Enter" to skip to content

Is the total mechanical energy conserved in the motion of a pendulum?

At every point in the motion of the pendulum the total mechanical energy is conserved. The sum of the gravitational potential energy and the kinetic energy, at each point of the motion, is a constant, which is the total mechanical energy.

What happens to the kinetic energy in a ballistic pendulum?

A ballistic pendulum is a device for measuring a bullet’s momentum, from which it is possible to calculate the velocity and kinetic energy. In the case of a pendulum total mechanical energy is conserved. So kinetic energy of the pendulum (after firing) is fully converted to potential energy.

Is kinetic energy conserved in the collision between the ball and the ballistic pendulum what is a way you know it is not?

The ballistic pendulum is a device in which a projectile such as a bullet is fired into a suspended heavy wooden stationary block. Some kinetic energy gets transformed into heat and sound, and some is used to deform the block. However, momentum is conserved.

What type of collision is studied in ballistic pendulum experiment?

Ballistic Pendulum – An Inelastic Collision Something as simple as a wooden block can be used to measure the muzzle velocity of a bullet. Known as ballistic pendulums, these devices have been used for decades in labs and classrooms to help investigate the conservation of energy and momentum.

How does the angle reached by the pendulum change if the ball is not caught by the pendulum?

4)How does the angle reached by the pendulum change if the ball is not caught by the pendulum? The angle is greater due to the change from an inelastic collision to an elastic collision. And a more elastic collision such as the ball striking the pendulum would increase the transfer of kinetic energy.

Why is a car crash inelastic?

An inelastic collisions occurs when two objects collide and do not bounce away from each other. Momentum is conserved, because the total momentum of both objects before and after the collision is the same. However, kinetic energy is not conserved. A high speed car collision is an inelastic collision.

How do you calculate energy lost in a collision?


  1. Concepts: Momentum conservation.
  2. Reasoning: In an inelastic collision kinetic energy is not conserved, but momentum is conserved.
  3. Details of the calculation: m1u1 = (m1 + m2)v. Ef = ½ (m1 + m2)v2, Ei = ½ m1u12. Fraction of energy lost = (Ei – Ef)/Ei = 1 – m1/(m1 + m2) = m2/(m1 + m2).

Is it impossible to lose all kinetic energy in a collision?

An inelastic collision is a collision in which there is a loss of kinetic energy. While momentum of the system is conserved in an inelastic collision, kinetic energy is not. This type of collision is perfectly inelastic because the maximum possible kinetic energy has been lost.