A hydraulic jack is used to lift a car in which a man stands on one piston and car is put on another one. What should be the minimum weight of the man to lift the car?

80 kg

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60 kg

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70 kg

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90 kg

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Solution

The correct option is A 80 kg

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Similar questions

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In a hydraulic lift, used at a service station the radius of the large and small piston are in the ratio of $20 : 1$ . What weight placed on the small piston will be sufficient to lift a car of mass $1500 k g$ ?

Q. A hydraulic lift is used to lift a car of mass

3000 k g

. The cross-sectional area of the lift on which the car is supported is

5 \times 10^{- 2} m

. What is the pressure on the smaller piston, if both the pistons are at the same horizontal level?
Take

g = 10 m s^{- 2}

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