Free Response Questions 1 m Initial position eviribrA ARAL m Incline raised to 0 0max pr A block of mass m is initially at rest on a rough board, which is initially horizontal on a tabletop The left end of the board is slowly raised until the board makes an angle 0 with the horizontal The block remains at rest (a) On the dot, which represents the block, draw envectors representing the forces on the block when the incline makes an angle with the hor av izontal The vectors should start on the dot and point away from the dot The vectors should beo drawn to an appropriate length consistent with the motion of the block 090 When the block reaches an angle max, the block breaks free and slides down the board o noi to (b) At all angles 0 0max, the block remains at rest on the incline Derive an expression for the fric tion force on the block as a function of 0 (c) Derive an expression for the coefficient of static friction, us, between the block and the incline in terms of Omax, m, and physical constants, as appropriate Assume the coefficient of kinetic friction between the block and the board is less than the coefficient of static friction (d) Describe the motion of the block as it slides down the incline Explain your reasoning

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Free-Response Questions 1. m Initial position eviribrA ARAL m Incline raised to 0 <0max pr A block of mass m is initially at rest

Free-Response Questions 1. m Initial position eviribrA ARAL m Incline raised to 0

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