State two reasons why the efficiency of a pulley system is always less than 100%. - ATIKA SCHOOL

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State two reasons why the efficiency of a pulley system is always less than 100%.

21/7/2020

K.C.S.E Physics Q & A - MODEL 2012PP1QN12

State two reasons why the efficiency of a pulley system is always less than 100%.

answer

Friction between the moving parts o(the pulley system;
Work done against friction;
Work done lifting the moving parts of the pulley system;

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Introduction to Physics (4 Lessons)
Measurements 1 (12 Lessons)
Force (16 Lessons)
Pressure (24 Lessons)
Particulate Nature of Matter (12 Lessons)
Thermal Expansion (12 Lessons)
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Electrostatics (12 Lessons)
Cells and Simple Circuits (12 Lessons)

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Magnetism (12 Lessons)
Measurements II (16 Lessons)
Turning Effect of Force (10 Lessons)
Equilibrium Centre of Gravity (12 Lessons)
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Current Electricity (20 Lessons)
Waves II(10 Lessons)
Electrostatics II (15 Lessons)
Heating Effect of Electric Current (10 Lessons)
Quantity of Heat (20 Lessons)
Gas Laws (15 Lessons)

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Thin Lenses (20 Lessons)
Uniform Circular Motion (10 Lessons)
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Electronics (10 Lessons)

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