previous 7 Problem 15.34 Enhanced-with Feedback Part A At exactly 12 00 noon, ho

Question

previous 7 Problem 15.34 Enhanced-with Feedback Part A At exactly 12 00 noon, how many oscilaions will the pendulum have comploted? Express your answer as an integer. In a science museum, a 140 kg brass pendulum bob swings at the end of a 12.3 m-long wire. The pendulum is started at exactly 8:00 am, every morning by pulling it 1.5 im to the side and releasing it. Because of its compact shape and smooth surface, the pendulum's damping constant is only 0.010 kg/s You may want to review ("pages405-40z) Submit My Answers Give.Up Part B What is its amplitude at noon? Express your answer to two significant figures and include the appropriate units. its

Explanation / Answer

a) frequency = 1 / 2 pi * sqrt [g / l ]

= 1/ 2 pi * sqrt [9.8 / 12.3] = 0.1421 oscillations/sec

number of oscillations fom 8:00 a.m to 12 noon N = f * t

= 0.1421 * 4 * 3600

N = 2045 oscillations

b) Amplitude = A e-bt/2m

= 1.5 * e(-0.01*14400/2*140)

= 0.897 m

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.