Table of Contents

- 1 What happens to the center of mass If a ball explodes?
- 2 What happens to the center of mass of the shell after the explosion?
- 3 Can the center of mass move?
- 4 When the dynamite explodes what happens to its mass?
- 5 Does the center of mass move?
- 6 Why is it important to know the motion of the center of mass?
- 7 What happens to the center of mass when an object explodes?
- 8 What is the momentum of the tennis ball after the explosion?

## What happens to the center of mass If a ball explodes?

Center of mass and motion The velocity of the system’s center of mass does not change, as long as the system is closed. The system moves as if all the mass is concentrated at a single point. Likewise, for an exploding projectile, the center of mass will continue on the parabolic trajectory.

## What happens to the center of mass of the shell after the explosion?

As the linear momentum of the object (here shell) was zero then even after explosion the center of mass will remain zero. Therefore, after the action of explosion of shell into fragments will result into its center of mass at rest.

**What happens to the center of mass when moving?**

If a system experiences no external force, the center-of-mass of the system will remain at rest, or will move at constant velocity if it is already moving. If there is an external force, the center of mass accelerates according to F = ma.

**Does center of mass stay the same?**

The books states the answer as: “There is no interaction outside the system (no external force), therefore the center of mass will not move.”

### Can the center of mass move?

No. The center of mass will not move, the ring will. In general ,you can say that the center of mass of a system tends to remain in its state of uniform velocity or of rest unless the whole system is being acted upon by an external force.

### When the dynamite explodes what happens to its mass?

This conversion of mass to energy happens well below the speed of light, in a very small way, when a stick of dynamite explodes. A portion of that stick becomes energy, and the fact that this portion is equal to just 6 parts out of 100 billion indicates the vast proportions of energy available from converted mass.

**Does the center of mass accelerate?**

The center of mass of the system only accelerates, if external forces are acting on the system. If only internal forces are acting on the particles that make up the system, then the center of mass does not accelerate, its velocity remains constant. The total linear momentum of the system is conserved.

**Can a center of mass move?**

#### Does the center of mass move?

The center of mass will not move, the ring will. In general ,you can say that the center of mass of a system tends to remain in its state of uniform velocity or of rest unless the whole system is being acted upon by an external force.

#### Why is it important to know the motion of the center of mass?

This is useful because it makes it easy to solve mechanics problems where we have to describe the motion of oddly-shaped objects and complicated systems. If we push on a rigid object at its center of mass, then the object will always move as if it is a point mass.

**Why does center of mass move?**

If we push on a rigid object at its center of mass, then the object will always move as if it is a point mass. It will not rotate about any axis, regardless of its actual shape. If the object is subjected to an unbalanced force at some other point, then it will begin rotating about the center of mass.

**Can the center of mass be outside an object?**

In other words, the center of mass is the particle equivalent of a given object for application of Newton’s laws of motion. The center of mass may be located outside the physical body, as is sometimes the case for hollow or open-shaped objects, such as a horseshoe.

## What happens to the center of mass when an object explodes?

If an object explodes, the different pieces of the object will follow seemingly independent paths after the explosion. The center of mass, however, will keep doing what it was doing before the explosion.

## What is the momentum of the tennis ball after the explosion?

Before the explosion, the total momentum of the system is zero since the cannon and the tennis ball located inside of it are both at rest. After the explosion, the total momentum of the system must still be zero. If the ball acquires 50 units of forward momentum, then the cannon acquires 50 units of backwards momentum.

**What is the motion of the center of mass?**

Motion of the center of mass. If an object is thrown into the air, different parts of the object can follow quite complicated paths, but the center-of-mass will follow a parabola. If an object explodes, the different pieces of the object will follow seemingly independent paths after the explosion.

**How do you find the total momentum after an explosion?**

If the vector sum of all individual parts of the system could be added together to determine the total momentum after the explosion, then it should be the same as the total momentum before the explosion. Just like in collisions, total system momentum is conserved.