For a single fixed pulley, an effort of 400N is required for a load of 300N. If the effort is moved by 30cm then calculate the efficiency of the pulley & energy that is used in overcoming friction.

60%, 15 J

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75%, 30 J

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90%, 45 J

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45%, 60 J

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55%, 90 J

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Solution

The correct option is B
75%, 30 J

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For a single fixed pulley, an effort of 400N is required for a load of 300N. If the effort is moved by 30cm then calculate the efficiency of the pulley & energy that is used in overcoming friction.

The correct option is B 75%, 30 J

The correct option is B
75%, 30 J