# exam-M11-1 - PHY 2048 Midterm Exam DAY Fall 2010 2 Use g =...

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PHY 2048 Midterm Exam - DAY Fall 2010 Use g = 9.80 m/s and G = 6.67 × 10 -11 Nm 2 /kg 2 . 2 1. [15 points] A 7.65 kg mass moves with a velocity given by the function v(t) = (5t 3 – 7t 2 – 11) m/s. What is the force acting on this mass? Give your answer as a function of time with numerical values specified with the correct number of significant figures. 2. [15 points] The unknown mass M is hanging from a rope attached to a wall at the known angle 2 as shown and pulled to the left by a known force F. Draw a clear free-body diagram and solve for the tension T in the rope in terms of the known parameters. 3. [20 points] A 1.76 kg mass m starts at rest at point A with the 9738 N/m spring compressed by 0.086 m. It strikes and sticks to the 2.97 kg mass M , which then slide together across a rough surface that provides a friction force of 5.85 N. How far do they slide before stopping? Show your well-organized calculation below.

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4. [15 points] A 0.356 kg projectile is launched at 43.5 m/s at a 57.8° angle above horizontal.
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## This note was uploaded on 12/30/2011 for the course PHY 2048 taught by Professor Laposky,e during the Fall '08 term at Tallahassee Community College.

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exam-M11-1 - PHY 2048 Midterm Exam DAY Fall 2010 2 Use g =...

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