Physics Class 6 ICSE Solutions - Simple Machines

Fill in the blanks (a) The useful work done by an actual machine is always less than the work done on the machine.

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Fill in the blanks (b) In class II levers, the load is in between fulcrum and effort.

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Fill in the blanks (c) The mechanical advantage of class III lever is always less than 1.

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Fill in the blanks (d) A pulley is used to change the direction of effort.

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Fill in the blanks (e) Mechanical advantage of an inclined plane is always greater than 1.

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When is work said to be done by a force ?

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What is energy ?

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What do you understand by a machine ?

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What is the principle on which a machine works ?

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State two functions of a machine.

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