How Far Will the Pendulum Swing After a 250m/s Rifle Bullet Buried Itself?

In summary, an inelastic collision is a type of collision that results in a loss of kinetic energy and causes objects to stick together or deform instead of bouncing off each other. In these collisions, the total momentum of the system is conserved. This is different from an elastic collision, where there is no loss of kinetic energy and objects bounce off each other. Inelastic collisions can also be perfectly inelastic, where the objects stick together and move with the same velocity. The amount of energy lost in an inelastic collision depends on the nature of the objects and the type of collision, with more elastic objects losing less energy. The angle and speed of the collision can also affect the amount of energy lost.
  • #1
mrtkawa
9
0
i need a help on this problem

a 20g rifle bullet traveling 250m/s buries itself in a 3.8kg pendulum hanging on a 2.3m-long string. how far does th ependulum swing horizontally?

Physics 3rd edition Douglas C. Giancoli
 
Physics news on Phys.org
  • #2
also this formuls might be handy

V1=(m+M)/mv'=(m+M)/√2gh

g=gravity
 
  • #3
The conservation of momentum

[tex](M+m)v=mv_0[/tex]

The conservation of energy

[tex]\frac{1}{2}(M+m)v^2=(M+m)gl(1-\cos\theta)[/tex]

The horizontal displacement

[tex]\Delta x=l\sin\theta[/tex]

Solving the equation will give you the answer
 
  • #4
thanks i got it
 

What is an inelastic collision?

An inelastic collision is a type of collision between two objects in which there is a loss of kinetic energy. This means that after the collision, the objects stick together or deform instead of bouncing off each other.

How is the momentum conserved in an inelastic collision?

In an inelastic collision, the total momentum of the objects before the collision is equal to the total momentum after the collision. This means that even though there may be a loss of kinetic energy, the total momentum of the system remains the same.

What is the difference between an inelastic collision and an elastic collision?

In an elastic collision, the objects bounce off each other and there is no loss of kinetic energy. In an inelastic collision, the objects stick together or deform, resulting in a loss of kinetic energy.

Can an inelastic collision be perfectly inelastic?

Yes, an inelastic collision can be perfectly inelastic, which means that the objects stick together and move with the same velocity after the collision. This is also known as a completely inelastic collision.

What factors affect the amount of energy lost in an inelastic collision?

The amount of energy lost in an inelastic collision depends on the nature of the objects involved and the type of collision. The more elastic the objects are, the less energy will be lost in the collision. Additionally, the angle and speed of the collision can also affect the amount of energy lost.

Similar threads

  • Introductory Physics Homework Help
Replies
2
Views
2K
  • Introductory Physics Homework Help
Replies
2
Views
2K
  • Introductory Physics Homework Help
Replies
8
Views
3K
  • Introductory Physics Homework Help
Replies
6
Views
2K
  • Introductory Physics Homework Help
Replies
10
Views
6K
  • Engineering and Comp Sci Homework Help
Replies
5
Views
3K
  • Introductory Physics Homework Help
Replies
5
Views
11K
  • Introductory Physics Homework Help
Replies
4
Views
4K
  • Introductory Physics Homework Help
Replies
2
Views
2K
  • Introductory Physics Homework Help
Replies
5
Views
4K
Back
Top