Chiba Entrance Science Practice Questions - Chiba Public High School Entrance Examination - Science Exam

A cook presses with the same force on a sharp knife and a dull knife. Why does the sharp knife cut more easily?

A sharp blade weighs less, so gravity helps it cut Its thin edge concentrates the force on a much smaller area, producing greater pressure A sharp blade increases the total force the cook applies A sharp blade removes all friction between the blade and the food

Correct Answer:

Its thin edge concentrates the force on a much smaller area, producing greater pressure

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