8- Consider a hydraulic jack being used in a car repair shop, as shown in Figure. The pistons have an area of A₁ = 0.8 cm² and A₂ = 0.04 m². Hydraulic oil with a specific gravity of 0.870 is pumped in as the small piston on the left side is pushed up and down, slowly raising the larger piston on the right side. A car that weighs 13,000 N is to be jacked up. (a) At the beginning, when both pistons are at the same elevation (h = 0), calculate the force F1 in newtons required to hold the weight of the car. (b) Repeat the calculation after the car has been lifted two meters (h 2 m). Compare and discuss. A₂ Hydraulic oil SG=0.870 Fr A₁₁

8- Consider a hydraulic jack being used in a car repair shop, as shown in Figure. The pistons have an area of A₁ = 0.8 cm² and A₂ = 0.04 m². Hydraulic oil with a specific gravity of 0.870 is pumped in as the small piston on the left side is pushed up and down, slowly raising the larger piston on the right side. A car that weighs 13,000 N is to be jacked up. (a) At the beginning, when both pistons are at the same elevation (h = 0), calculate the force F1 in newtons required to hold the weight of the car. (b) Repeat the calculation after the car has been lifted two meters (h 2 m). Compare and discuss. A₂ Hydraulic oil SG=0.870 Fr A₁₁