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PHY2048 Unit 3 Assignment(a)

PHY2048 Unit 3 Assignment(a) - Grading Rubrics Question 1...

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PHY2048 Unit 3 Assignment Show all your steps and draw diagrams where necessary. Add explanatory notes where necessary. 1. A particle oscillates back and forth in a frictionless bowl whose height is given by h(x) = 0.22x 2 where h and x are meters. (a) Show graphically how the potential and kinetic energies of the particle vary with x. (b) Where does the particle have maximum kinetic energy? (c) If the maximum speed of the particle is 0.4 ms -1 , find the x-coordinates at which the particle has maximum potential energy. 2. A spring of spring constant k = 340 Nm -1 is used to launch a 1.5-kg block along a horizontal surface by compressing the spring by a distance of 18 cm. If the coefficient of sliding friction between the block and the surface is 0.25, how far does the block slide? 3. A 1000-kg compact car moving with a velocity of v 1 = (32 i + 17 j )ms -1 collides with a 450-kg wagon moving with a velocity v 2 = (12 i + 14 j )ms -1 . If the two stick together after collision, what is the velocity of the wreck?
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Unformatted text preview: Grading Rubrics Question 1 carries 8 points as follows: a. The correct graph – 2 b. The position of maximum KE - 2 c. Finding the maximum U = 2 Finding the coordinates of the point - 2 Question 2 carries 6 points as follows: 1. Calculating the work done by the spring - 2 2. Calculating the frictional force between the block and the surface - 2 3. Using the work done by the frictional force to find x, the displacement – 2 Question 3 carries 6 points as follows: 1. Writing expressions for initial and final momentum using the final velocity components - 2 2. Calculating the final velocity components using conservation of momentum - 2 3. Finding the magnitude and angle of the final velocity - 2 GE outcomes assessed in these two questions include critical thinking (CT), quantitative reasoning (QR) and technology/information (TIM) skills....
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