Question: The coefficient of static friction between a brick and a wooden board is 0.40 and the coefficient of kinetic friction between the brick and board

The coefficient of static friction between a brick and a wooden board is 0.40 and the coefficient of kinetic friction between the brick and board is 0.30. You place the brick on the board and slowly lift one end of the board off the ground until the brick starts to slide down the board.
(a) What angle does the board make with the ground when the brick starts to slide?
(b) What is the acceleration of the brick as it slides down the board?

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a The force of gravity on the brick must be equal and opposite to the maximum force ... View full answer

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