Compressed air in a car lift exerts a force on a small piston of circular cross section having a rad

JAMB Physics 2023 230 views
Source: JAMB · 2023

Compressed air in a car lift exerts a force on a small piston of circular cross section having a radius of r1 = 10 cm. This pressure is transmitted by an incompressible liquid to a second piston of radius r2 = 20 cm. What force must the compressed air exert on the small piston in order to lift a car weighing 15,500 N? [The weights of the pistons are negligible.]

Compressed air in a car lift exerts a force on a small piston of circular cross section having a radius of r1 = 10 cm. This pressure is transmitted by an incompressible liquid to a second piston of radius r2 = 20 cm. What force must the compressed air exert on the small piston in order to lift a car weighing 15,500 N? [The weights of the pistons are negligible.]

  1. 3,955 N
  2. 5, 225 N
  3. 3,875 N ✓
  4. 4,825 N

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