The hydraulic system of a backhoe is used to lift a load as shown in Figure 11.42.

Question:

The hydraulic system of a backhoe is used to lift a load as shown in Figure 11.42.

(a) Calculate the force the secondary cylinder must exert to support the 400-kg load and the 150-kg brace and shovel. 

(b) What is the pressure in the hydraulic fluid if the secondary cylinder is 2.50 cm in diameter? 

(c) What force would you have to exert on a lever with a mechanical advantage of 5.00 acting on a primary cylinder 0.800 cm in diameter to create this pressure?

F 0.30 m 1.10 m 30 Warm 1.70 m Wload

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