Forces and Friction - JSS2 Basic technology Past Questions and Answers - page 1
What type of force pulls objects towards the centre of the Earth?
Frictional force
Gravitational force
Magnetic force
Electrostatic force
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Which force opposes the motion of objects sliding past each other?
Gravitational force
Magnetic force
Frictional force
Normal force
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What type of force is exerted by magnets?
Gravitational force
Frictional force
Magnetic force
Tensional force
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Which force occurs between charged particles?
Gravitational force
Magnetic force
Frictional force
Electrostatic force
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What is the main function of lubricants?
To increase friction
To reduce friction
To create more heat
To polish surfaces
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Which type of friction occurs when a book rests on a table without moving?
Static friction
Kinetic friction
Rolling friction
Fluid friction
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What technique is used to reduce friction in machinery?
Increasing surface roughness
Removing lubricants
Using ball bearings
Applying more weights
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Which force supports the weight of an object resting on a surface?
Gravitational force
Normal force
Magnetic force
Frictional force
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What is the effect of friction on moving parts in a machine?
Reduces efficiency
Increases speed
Prevents wear and tear
Cools the parts
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Which of the following is a method to reduce friction between surfaces?
Increasing roughness
Removing lubricants
Polishing the surfaces
Applying more force
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