Neco 2023 Physics Question 7

Practice essay / theory question 7 from the 2023 Neco Physics examination. This question covers Pressure, Hydraulics, Mechanical efficiency .

Neco 2023 Physics Essay / Theory

Topics: Pressure Hydraulics Mechanical efficiency

Question 7 NECO • 2023 • PHYSICS • essay

A hydraulic lifting system consists of two pistons connected by an incompressible fluid. The small piston has a radius of 2.0 cm and the large piston has a radius of 20.0 cm. A load of 5000 N is to be raised vertically at constant speed. The system operates with an overall mechanical efficiency of 85% because of friction in the fluid lines.

( a )

Determine the minimum force that must be applied on the small piston to raise the load.

( b )

If the load is lifted through a vertical distance of 0.50 m in 5.0 s, calculate the average power that the operator must supply.

( c )

Explain briefly why the efficiency of the system is less than 100 % and how it influences the required input force.

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This is Neco 2023 Physics Question 7. It is one of the essay questions from the 2023 Neco Physics examination.

The question covers Pressure, Hydraulics, Mechanical efficiency .

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