Water impact force on a body transitioning through mediums

In summary, the impact force is the sum of all the forces acting on a free falling body during the time period from initial contact to terminal velocity, and it can be calculated by summing up all the individual forces and dividing by the time period.
  • #1
babbagero
2
0
scenario - A free falling body impacts water at terminal velocity. During what time period is the body considered to be in impact. I am trying to calculate the impact force alone. Is the impact force considered at the initial contact, during the body is fully transitioning from one medium to the next (air to water) complete submertion.. or is the impact force considered over a time period from initial contact up to when ones body is descending due to a negative (neutral) bouyancy alone?? I know a lot of forces are involved.. air drag.. surface tension.. parasitic drag..turbulance.. bouyancy forces.. gravity. really what is the deffinition of the impact force in this scenario and how do I calculate it??
 
Physics news on Phys.org
  • #2
The impact force in this scenario is the sum of all the forces acting on the body during the time period from initial contact until the body reaches terminal velocity, which is when the upward buoyancy forces equal the downward gravitational forces. This includes the forces of air drag, surface tension, parasitic drag, turbulence, and buoyancy. You can calculate the impact force by summing up all the individual forces and dividing this total by the time period from initial contact to terminal velocity.
 

FAQ: Water impact force on a body transitioning through mediums

1. How does the mass of a body affect the water impact force?

The mass of a body does not directly affect the water impact force. However, a heavier body may experience a greater impact force due to its higher momentum.

2. Does the speed of the body affect the water impact force?

Yes, the speed of the body does have an impact on the water impact force. The faster the body moves through the water, the greater the impact force will be.

3. How does the shape of a body affect the water impact force?

The shape of a body can significantly affect the water impact force. A more streamlined shape will experience less drag and therefore a lower impact force, while a broader and less streamlined shape will experience more drag and a higher impact force.

4. Does the density of the medium affect the water impact force?

Yes, the density of the medium, in this case water, can affect the impact force. A denser medium will provide more resistance, resulting in a higher impact force on the body transitioning through it.

5. How can the water impact force be calculated?

The water impact force can be calculated using the formula F = ma, where F is the force, m is the mass of the body, and a is the acceleration. The acceleration can be determined by measuring the change in speed of the body as it enters the water. Factors such as the shape and density of the body and the medium should also be taken into account when calculating the impact force.

Back
Top