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Question
Classify the following as a lever, a pulley and an inclined plane:
An opener
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Solution
An opener – A lever
RELATED QUESTIONS
Define the term ‘work input’ and ‘work output’ in relation to a machine.
Can a machine have an efficiency of 100%? Give a reason to support your answer.
Answer the following.
What is a machine?
State if the following statement is true or false. Correct the statement if it is false.
Work done by a machine is always more than the work done on a machine.
What do you understand by a simple machine?
Define Efficiency
Define mechanical advantage (M.A.) of the machine.
Comment on the statement ‘The mechanical advantage of a machine is greater than 1’. Give an example of a lever mechanical advantage is:
(i) greater than 1.
(ii) Equal to 1.
Classify the following as a lever, a pulley and an inclined plane:
An axe
Simple machines usually exchange a larger force to move a heavy object.
