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You can create printable tests and worksheets from these Grade 8 Simple Machines questions! Select one or more questions using the checkboxes above each question. Then click the add selected questions to a test button before moving to another page.

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An object being lifted or moved by a machine is
1. a fulcrum.
3. work.
4. force.
5. friction.
Comparing a machine's work output with work input refers to
1. a watt.
2. mechanical efficiency.
4. a joule.
Which of the following statements would be true about the lever shown if C was moved closer to A?
1. the ideal mechanical advantage would increase
2. the ideal mechanical advantage would decrease
3. the ideal mechanical advantage would remain unchanged
Which distances should be divided in order to calculate the ideal mechanical advantage of the lever shown?
1. $(BA)/(BC)$
2. $(BC)/(BA)$
3. $(AC)/(BA)$
4. $(BA)/(AC)$
Look at the image of the pulley. If bucket A has a mass of 5 kg, which of the following statements is true about the minimum effort force required to lift the bucket if friction is ignored?
1. It would take 0 kg of effort to lift the bucket.
2. It would take 2.5 kg of effort to lift the bucket.
3. It would take 5 kg of effort to lift the bucket.
4. It would take 10 kg of effort to lift the bucket.
What are two examples of an inclined plane?
1. lever and screw
2. screw and wedge
3. wedge and lever
What is the work done by a machine on an object?
1. power
2. work input
3. work output
4. lever
A wheelbarrow is an example of
1. second-class lever
2. wheel and axle
3. inclined plane