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sachin singh Grade: 12
        

A box sits on a horizontal wooden board. The coefficient of static friction between the box and the board is 0.5. You grab one end of the board and lift it up, keeping the other end of the board on the ground. What is the angle between the board and the horizontal direction when the box begins to slide down the board?

6 years ago

Answers : (1)

SAGAR SINGH - IIT DELHI
879 Points
										

Dear sachin,


The critical angle is determined by the condition:



From this equation we can find an angle .


 









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Sagar Singh


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6 years ago
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