6. [-/10 Points] DETAILS SERPSE10 8.3.P.007.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise A crate of mass m = 9.9 kg is pulled up a rough incline with an initial speed of v, = 1.43 m/s. The pulling force is F = 99 N parallel to the incline, which makes an angle of 0 = 20.79 with the horizontal. The coefficient of kinetic friction is 0.400, and the crate is pulled d = 5.07 m. (a) How much work is done by the gravitational force on the crate? (b) Determine the increase in internal energy of the crate-incline system owing to friction. (c) How much work is done by the 99-N force on the crate? (d) What is the change in kinetic energy of the crate? (e) What is the speed of the crate after being pulled 5.07 m? Ing Click here to begin! Need Help? Read It 7. [-/10 Points] DETAILS SERPSE10 8.3.OP.008. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A block of mass m = 2.00 kg is attached to a spring of force constant k = 470 N/m as shown in the figure below. The block is pulled to a position x, = 5.80 cm to the right of equilibrium and released from rest. WWWWWW m 0 x= X; (a) Find the speed the block has as it passes through equilibrium if the horizontal surface is frictionless. m/s (b) Find the speed the block has as it passes through equilibrium (for the first time) if the coefficient of friction between block and surface is u = 0.350. m/s Need Help? Read It Watch It 8. [-/10 Points] DETAILS SERPSE10 8.4.OP.012. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A toy cannon uses a spring to project a 5.22-g soft rubber ball. The spring is originally compressed by 5.04 cm and has a force constant of 8.05 N/m. When the cannon is fired, the ball moves 14.0 cm through the horizontal barrel of the cannon, and the barrel exerts a constant friction force of 0.032 9 N on the ball. (a) With what speed does the projectile leave the barrel of the cannon? m/s (b) At what point does the ball have maximum speed? cm (from its original position) (c) What is this maximum speed? m/s Need Help? Read It Watch It6:58 9. [-/10 Points] DETAILS SERPSE10 8.4.OP.013. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The coefficient of friction between the block of mass m. = 3.00 kg and the surface in the figure below is A, = 0.320. The system starts from rest. What is the speed of the ball of mass my = 5.00 kg when it has fallen a distance h = 1.35 m? m/s Need Help? Read It Watch 10. [-/10 Points] DETAILS SERPSE10 8.4.OP.014.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise A 5.10-kg block is set into motion up an inclined plane with an initial speed of v, = 7.70 m/s (see figure below). The block comes to rest after traveling d = 3.00 m along the plane, which is inclined at an angle of 0 = 30.0% to the horizontal. (a) For this motion, determine the change in the block's kinetic energy. (b) For this motion, determine the change in potential energy of the block-Earth system. (c) Determine the friction force exerted on the block (assumed to be constant). (d) What is the coefficient of kinetic friction? Click here to begin! Need Help? Read it 11. [-/10 Points] DETAILS SERPSE10 8.4.OP.015.MI.SA. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This question has several parts that must be completed sequentially. If you skip a part of the question, you will not receive any points for the skipped part, and you will not be able to come back to the skipped part. Tutorial Exercise A 182-g block is pressed against a spring of force constant 1.52 kN/m until the block compresses the spring 10.0 cm. The spring rests at the bottom of a ramp inclined at 60.0" to the horizontal. Using energy considerations, determine how far up the incline the block moves from its initial position before it stops under the following conditions. (a) if the ramp exerts no friction force on the block (b) if the coefficient of kinetic friction is 0.420 Click here to begin! Need Help? Read It 12. [-/10 Points] DETAILS SERPSE10 8.5.OP.017. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER webassign.net