Verifying Diff. Force Equation for System: Can You Help?

In summary, the differential force equation for a system is a mathematical expression that relates the forces acting on a system to its resulting motion. It is typically written as F = ma and can be verified through experimental testing, such as the "egg drop" experiment. However, there are limitations to this equation, including the assumption of equilibrium and a rigid body with constant mass. Nevertheless, it is widely used in various fields, including engineering and physics, to calculate and design the motion and stability of objects and structures.
  • #1
erezb84
43
0

Homework Statement


Hi,
i need to write the differencial force equation for the system attached,
and i am not sure if what i do is right.

when:
F- externa power
m1,m2 - mass
x1,x2 - mas location

The Attempt at a Solution


This is what i got:
for m1:
F-k*(x1-x2)-D*(x1'-x2')=m*x1''
for m2:
k*(x1-x2)+D*(x1'-x2')=m*x2'

what do you think?
thanks!
 

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  • #2
Looks fine except you left of the double prime for acceleration on the second equation.
 
  • #3
ok, thanks!
 

Related to Verifying Diff. Force Equation for System: Can You Help?

1. What is the differential force equation for a system?

The differential force equation for a system is a mathematical expression that describes the relationship between the forces acting on a system and the resulting motion of the system. It is typically written as F = ma, where F is the net force, m is the mass of the system, and a is the acceleration.

2. How do you verify the differential force equation for a system?

The best way to verify the differential force equation for a system is through experimental testing. This involves measuring the forces acting on a system and the resulting motion, and then comparing them to the predicted values from the equation. If the results match, the equation is considered verified.

3. Can you provide an example of verifying the differential force equation for a system?

One example of verifying the differential force equation for a system is the classic "egg drop" experiment. In this experiment, an egg is dropped from a height and the forces acting on it, such as gravity and air resistance, are measured. The resulting motion of the egg can then be compared to the predicted values from the differential force equation.

4. Are there any limitations to the differential force equation for a system?

Yes, there are some limitations to the differential force equation for a system. It assumes that the system is in a state of equilibrium, meaning that the forces acting on the system are balanced. It also assumes that the system is a rigid body with a constant mass and that the forces are acting in a linear direction.

5. How is the differential force equation for a system applied in real-world scenarios?

The differential force equation for a system is used in many real-world scenarios, including engineering, physics, and everyday life. It is used to calculate the motion of objects such as cars, airplanes, and even the human body. It is also used in designing structures and machines to ensure they can withstand the forces acting on them.

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