Question

In a car lift compressed air exerts a force $F_1$ on a small piston having a radius of 5cm. This pressure is transmitted to a second piston of radius 15cm. If the mass of the car to be lifted is 1350 kg. What is $F_1$ ?

• A. $14.7 \times 10^3\,N$
• B. $1.47 \times 10^3\,N$
• C. $2.47 \times 10^3\,N$
• D. $24.7 \times 10^3\,N$

Answer 1

Answer: (B)

$1.47 \times 10^3\,N$

Answer 2

$\frac{F_1}{A_1} = \frac{F_2}{A_2}$