Calculating Pressure Increase in a Syringe | 43 N Force, 1.1 cm Radius Plunger

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To calculate the pressure increase in a syringe when a force of 43 N is applied to a piston with a radius of 1.1 cm, the correct approach involves determining the area of the plunger first. The area is calculated using the formula for the area of a circle, A = πr², where r is the radius in meters. The pressure increase is then found by dividing the force by the area, not simply multiplying them. The final calculated pressure increase is approximately 0.016346 Pa. Understanding the definition of pressure is crucial for accurate calculations in fluid mechanics.
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Homework Statement



Find the pressure increase in the fluid in a syringe when a nurse applies a force of 43 N to the syringe's circular piston, which has a radius of 1.1 cm.

Homework Equations

The Attempt at a Solution


So the answer should just be the force multiplied by the area of the plunger, no?
43N*pi*0.011m^2
0.016346 Pa
 
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Jrlinton said:

Homework Statement



Find the pressure increase in the fluid in a syringe when a nurse applies a force of 43 N to the syringe's circular piston, which has a radius of 1.1 cm.

Homework Equations

The Attempt at a Solution


So the answer should just be the force multiplied by the area of the plunger, no?
43N*pi*0.011m^2
0.016346 Pa
No. How is the pressure defined?
http://hyperphysics.phy-astr.gsu.edu/hbase/press.html
 
Silly me. Thank you
 
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