Science Class 5 Force

Asked by AKSHAY GURU VARADHARAJAN · SRI CHAITANYA TECHNO SCHOOL, JAYANTI NAGAR.

Sam argues that using a longer inclined plane requires more effort because it takes more time to move the load. His friend Mia claims that a longer inclined plane reduces effort because the load is spread over a greater distance.

Who is correct, and why?

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A Sam is correct because time directly relates to effort.
B Mia is correct because effort decreases as the distance increases.
C Neither is correct; the effort depends only on the angle of the plane.
D Both are correct; longer planes reduce effort but increase time.

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Answer: B. Mia is correct because effort decreases as the distance increases.

Simple machines follow the rule: Force X Distance = Work. By increasing the distance (the length of the ramp), you require less force (effort) to lift the same load.

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Sam argues that using a longer inclined plane requires more effort because it takes more time to move the load. His friend Mia claims that a longer inclined plane reduces effort because the load is spread over a greater distance. Who is correct, and why?

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Sam argues that using a longer inclined plane requires more effort because it takes more time to move the load. His friend Mia claims that a longer inclined plane reduces effort because the load is spread over a greater distance.

Who is correct, and why?