Simple Machines - JSS2 Basic technology Past Questions and Answers - page 1
Which of the following is not a type of lever?
First-class lever
Second-class lever
Third-class lever
Fourth-class lever
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In a first-class lever, where is the fulcrum located?
Between the effort and the load
Between the load and the effort
At one end
At the centre of the load
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Which simple machine consists of a wheel with a grooved rim and a rope?
Lever
Pulley
Gear
Wheel and axle
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What is the main function of gears in machinery?
To change the direction of force
To lift heavy loads
To transmit motion and force
To cut materials
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Which type of pulley reduces the amount of input force needed to lift a load?
Fixed pulley
Movable pulley
Compound pulley
Friction pulley
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In which class of lever is the load between the fulcrum and the effort?
First-class lever
Second-class lever
Third-class lever
Fourth-class lever
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What is an example of a third-class lever?
Seesaw
Nutcracker
Tweezers
Crowbar
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Which simple machine is used in elevators to lift the car up and down?
Lever
Pulley
Gear
Inclined plane
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Which type of lever is a pair of scissors?
First-class lever
Second-class lever
Third-class lever
Fourth-class lever
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What is the primary purpose of a lever?
To transmit motion
To change the direction of force
To increase speed
To increase force
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