Question

In a car lift compressed air exert a force F1 on a small Piston having radius of 5 cm. This pressure is transmitted to second piston of radius 15 cm. If the mass of the car to be lifted is 1350 kg. What is F1?

• A. $14.7\times {10}^{3}N$
• B. $1.47\times {10}^{2}N$
• C. $2.47\times {10}^{3}N$
• D. $24.7\times {10}^{2}N$

Answer 1

The correct option is A $14.7\times {10}^{3}N$

$\text{Pressune on both piston is}\text{Same}$

$\frac{f_1}{\pi \times (5{)}^2}=\frac{1350\times 9.8}{\pi (15{)}^2}$

$f_1=\frac{1350\times 9.8\times 25}{225}$

$=1.47\times {10}^{3}N$

$\text{Answer}:-\left(A\right)$