Pascal Principles

What is the pressure in the hydraulic fluid?

• 1210 N
• 484 N/m²
• 8000 N
• 3025 N/m²

What is the force up on the mailbox?

• 1210 N
• 8000 N
• 7744 N
• 5655 N

Tags

NGSS.HS-PS2-1

How much was the original force multiplied?

•   6.4 x
• 8.3 x
• 5 x
• 7 x

In a car lift, compressed air exerts a force, F₁ on a small piston having a radius of 5.5cm. This pressure is transmitted to a second piston of radius 20cm as shown in figure above. The mass of the car is 1250kg. Acceleration due to gravity g=10ms^-2.

Calculate the pressure on the smaller piston F_1.

• 100kPa

• 130kPa

• 99.47kPa

• 151.2kPa

Weight of the car is 2.6 x 10⁶ kg. Ratio between master piston to slave piston is 1 : 15. What if force exerted to the master piston.

• 1.3 x 10⁶ N

• 1.3 x 10⁷ N

• 3.0 x 10⁶ N

• 3.0 x 10⁷ N

Tags

NGSS.HS-PS2-1

If a force 20N is applied to piston C. What is the pressure exerted to piston A

• 4.0 x 10² Pa

• 4.0 x 10⁴ Pa

• 2.0 x 10² Pa

• 2.0 x 10⁴ Pa

Which statement is correct

• P _{a =} P _{b =} P _c

• A _{a =} A _{b =} A _c

• F _{a =} F _{b =} F _c

What will be the output force?

• 20 N

• 2 N

• 50 N

• 500 N

A thin, rectangular-prism-shaped piston has sides 0.01 m and 0.015 m in length. The piston is pushed a horizontal distance of 0.25 m along a tube attached to a larger water tank, as shown in the diagram. The tube has the same cross section as the piston. The water tank is a rectangular prism with a cross section that has sides of lengths 0.05 m and 0.075 m. Floating on top of the water in the tank is a thin, wooden, rectangular-prism-shaped plank that has the same cross section as the water tank. Assume that the friction between the piston and the tube and that between the plank and the tank is negligible. What is the distance 𝑑 that the plank rises?

• 1 cm

• 2 cm

• 0.01 cm

• 0.02 cm

Tags

NGSS.HS-PS2-2

A thin, rectangular-prism-shaped piston has sides 0.01 m and 0.015 m in length. The piston is pushed a horizontal distance of 0.25 m along a tube attached to a larger water tank, as shown in the diagram. The tube has the same cross section as the piston. The water tank is a rectangular prism with a cross section that has sides of lengths 0.05 m and 0.075 m. Floating on top of the water in the tank is a thin, wooden, rectangular-prism-shaped plank that has the same cross section as the water tank. Assume that the friction between the piston and the tube and that between the plank and the tank is negligible. The work done on the piston to move it is 5 J. What is the average force applied to the plank?

• 500 N

• 333 N

• 100 N

• 20 N

Tags

NGSS.HS-PS2-1