Exercise |
43.
Hydraulic press machine is used for lifting automotive vehicle. Machine use oil with a density 800 kg per cubic meter. Big and Small cross section area of the pistons have 100 cm. square,and 25 cm. square , respectively. To lift a heavy car 1000 kg , the small piston at the moment pressing down and the oil level of the small piston is higher than the oil level of the big piston 100 cm. Calculate the Force at the cross section area of the small piston must be for lifting the car? |
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Strategy |
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Pressure left leg and right leg are equal. |
Solution |
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Ans.
The Force at the cross section area of the small piston must be at least 230 N. for lifting the car. |
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Oil Jack |
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