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Question
Answer the following in detail.
How does a pulley make work simpler?
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Solution
A pulley is a wheel or a circular disc that can rotate freely about its axle. It is used to lift heavy objects. It is neither a force multiplier nor a speed multiplier. It only changes the direction of the applied force from upwards against gravity to downwards towards gravity. There are two types of pulley systems – Single fixed pulley and single movable pulley.
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(i) Copy the diagram and mark the direction of tension on each strand of the string.
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