Object bouncing off a surface

In summary, the conversation is discussing an Egg Drop experiment and the force required for an object to bounce. The experiment involved dropping an object from rest and measuring its change in momentum in a time of 0.25 seconds as it fell approximately 5 meters. The question is whether the force needed for the object to bounce is smaller, larger, or the same as the force required in a previous experiment where the force was 3.09 Newtons, the mass of the object was 0.078 kg, and the final velocity was 9.89 m/s. The class is currently learning about collisions and the concepts of elastic, inelastic, and momentum/impulse. The question is whether the force needed for an object to bounce
  • #1
Judah
5
0
-An Egg Drop began at rest and fell through approximately 5-m. Assume that its momentum was changed in a time of 0.25-s. If your apparatus bounced when hitting the ground, would this require a smaller force than in #4, a larger force than in #4, or the same force as in #4? Explain….

-Note: My class is still on collisions: elastic, inelastic, and momentum/impulse therom

-The force from number 4 is 3.09 Newtons.
Mass of the apparatus is .078 kg.
Velocity final is 9.89 m/s.

What force is required for an object to bounce?

Does the force have to be larger than its weight?
 
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  • #2
Hi !
Can you show us your attempt for the problem ?
 
  • #3
Do you know what force is?
 

What is the physics behind an object bouncing off a surface?

When an object bounces off a surface, it is due to the conservation of energy and the conservation of momentum. When the object hits the surface, the force of the impact causes the object to deform, storing potential energy. This potential energy is then released, causing the object to bounce back. Additionally, the surface exerts an equal and opposite force on the object, known as the normal force, which helps to conserve momentum.

What factors affect the height and speed of an object bouncing off a surface?

The height and speed of an object bouncing off a surface can be affected by several factors, including the initial height at which the object was dropped, the elasticity of the object and the surface, and the angle at which the object hits the surface. The weight and shape of the object can also play a role in determining the height and speed of the bounce.

What is the difference between a perfectly elastic and a perfectly inelastic collision?

In a perfectly elastic collision, the object bounces off the surface without any loss of kinetic energy. This means that the speed and direction of the object after the bounce are the same as before the impact. In a perfectly inelastic collision, the object sticks to the surface and there is a loss of kinetic energy. This results in a decrease in speed and a change in direction for the object after the collision.

How does the surface material affect the bounce of an object?

The surface material can greatly affect the bounce of an object. A soft or cushioned surface will absorb more of the impact force, resulting in a lower bounce. A hard and smooth surface, on the other hand, will not absorb as much of the impact force and will result in a higher bounce. The elasticity of the surface material also plays a role in determining the height and speed of the bounce.

How can the laws of physics be applied to predict the behavior of an object bouncing off a surface?

The laws of physics, specifically the conservation of energy and momentum, can be used to predict the behavior of an object bouncing off a surface. By knowing the initial conditions, such as the mass, velocity, and angle of the object, along with the properties of the surface, it is possible to calculate the height and speed of the bounce using equations derived from these laws. However, external factors such as air resistance and friction may also need to be taken into account for a more accurate prediction.

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