$\"\"$

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The work done is $\"\"$ ,

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where $\"\"$ is the angle between displacement $\"\"$ and the force exerted $\"\"$ .

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If lisa does $\"\"$ joules of work, while exerting force of $\"\"$ newtons over $\"\"$ meters.

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Where $\"\"$ joules, $\"\"$ newtons and $\"\"$ meters.

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Substitute the above values in $\"\"$ .

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$

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$\"\"$ .

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The exerting force angle is $\"\"$ .

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$\"\"$

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The exerting force angle is $\"\"$ .