We know that friction depends upon mass of the body. When we roll down an iron ball and a football on the ground, which ball will travel more distance? Why?

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Solution

Mass is directly proportional to friction, but acceleration is inversely proportional to mass.
When ball or object rotates on ground, acceleration is inversely proportional to the mass.
Hence football will reach first.

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We know that friction depends upon mass of the body. When we roll down an iron ball and a football on the ground, which ball will travel more distance? Why?

Mass is directly proportional to friction, but acceleration is inversely proportional to mass.When ball or object rotates on ground, acceleration is inversely proportional to the mass.Hence football will reach first.

Mass is directly proportional to friction, but acceleration is inversely proportional to mass.
When ball or object rotates on ground, acceleration is inversely proportional to the mass.
Hence football will reach first.