Which situation needs high friction?

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A Oil in machine bearings
B Soles of sports shoes gripping the ground
C Smooth ice skating surface
D Polished wooden drawer sliding

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Answer: B. Soles of sports shoes gripping the ground

Sports shoes need high friction so their soles grip the ground and players do not slip. In bearings, ice rinks and drawers, friction is reduced on purpose to make movement smooth.

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Which situation needs high friction?

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