Fluid Power Mathematics Worksheet
Fluid Power Mathematics Worksheet
Area of a Circle: A = π r2 (use π = 3.14)
Pressure: P = F Force: F = P x A Area: A = F
A P
1. If an actuator’s piston has a diameter of 5 inches, what is its radius?
2. If the actuator’s piston has a radius that is 2 inches, what is its area?
3. If the actuator’s piston has a diameter that is 3 inches, what is its area?
4. What is the pressure in pounds per square inch (PSI) if 100 pounds of force are applied to a hydraulic system’s piston with an area of 2 inches?
5. What is the pressure in pounds per square inch (PSI) if 50 pounds of force are applied to a hydraulic system’s piston with an area of 4 inches?
6. What is the force of an actuator with a piston that has an area of 3 square inches ( in2 ) and a 50 psi?
7. What is the force of an actuator with a piston that has an area of 5 square inches ( in2 ) and a 75 psi?
8. If we want 50 pounds of force and we know the pressure is 10 psi, how much area does the piston in the actuator need?
9. If we need a piston with an area of 314 inches, what would its radius need to be?
10. If we have two actuators connected together and one actuator has 50lbs of force applied to its piston that has an area of 2 square inches, how big area must the other actuator have to produce 500 lbs of force?
1. 2.5 in.
2. 12.57 in2
3. 7.07 in2
4. 50 PSI
5. 12.5 PSI
6. 150 lbs
7. 375 lbs
8. 5 in2
9. 10 in
10. First we must determine the pressure, using the information we know about the first actuator.
F = 50, A = 2
50 = P * 2
P = 25 psi
Now we can determine the Area of the second actuator using that we know the force of the second actuator has to be (500-50) = 450 lbs.
F = 450, P = 25
450 = 25 * A
A = 18 square inches
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