A block is resting on an inclined plane. As the inclination angle is progressively raised, the block starts to slide just when the angle reaches 30°. What are the block's and the plane's angle of friction and coefficient of friction respectively?

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Mathematics · Engineering Mechanics

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

Angle of friction = 30°; Coefficient of friction = tan(30°)

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Answer 1

Angle of friction = 60°; Coefficient of friction = tan(60°)

Answer 2

Angle of friction = 30°; Coefficient of friction = 0.50

Answer 3

Angle of friction = tan-1(0.5); Coefficient of friction = 0.50

Answer 4

Angle of friction = 30°; Coefficient of friction = tan(30°)

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