Homework 11 - Abd Elhai, Mohamed – Homework 11 – Due:...

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Unformatted text preview: Abd Elhai, Mohamed – Homework 11 – Due: Apr 28 2008, 9:00 pm – Inst: Dr Kevin Dean 1 This print-out should have 24 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. The due time is Central time. This is ONLINE HOMEWORK No. 11 It is due by 06:00 AM Abu Dhabi Time on Tuesday 29 April (9:00 PM Monday 28 April, Texas time). 001 (part 1 of 2) 4 points A piston in an automobile engine is in simple harmonic motion. Its amplitude of oscillation from the equilibrium (centered) position is ± 2 . 5 cm and its mass is 3 . 15 kg. Find the maximum velocity of the piston when the auto engine is running at the rate of 2600 rev / min. Answer in units of m / s. 002 (part 2 of 2) 4 points Find the maximum acceleration of the piston when the auto engine is running at this rate. Answer in units of km / s 2 . 003 (part 1 of 1) 0 points Simple harmonic motion can be described us- ing the equation y = A sin( k x- ω t- φ ) . Consider the simple harmonic motion given by the figure. + A-A y π 2 π 3 π 4 π At position x = 0, we have ω t What equation describes the motion? sin(- θ ) =- sin θ . 1. y = A sin ‡- ω t + π 2 · 2. y = A sin µ- ω t- 3 π 2 ¶ 3. y = A cos µ- ω t- 3 π 2 ¶ 4. y = A cos ‡- ω t + π 2 · 5. y = A sin ‡- ω t- π 2 · 6. y = A tan ‡- ω t + π 2 · 7. y = A cos ‡- ω t- π 2 · 8. y = A tan µ- ω t- 3 π 2 ¶ 9. y = A tan ‡- ω t- π 2 · 004 (part 1 of 4) 4 points A 13 . 8 kg mass is suspended on a 100000 N / m spring. The mass oscillates up and down fromspring....
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Homework 11 - Abd Elhai, Mohamed – Homework 11 – Due:...

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