Ch4-H4-solutions

# Ch4-H4-solutions - chauhan(mmc2762 Ch4-H4 turner(56910 This...

This preview shows pages 1–2. Sign up to view the full content.

chauhan (mmc2762) – Ch4-H4 – turner – (56910) 1 This print-out should have 24 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 (part 1 of 2) 10.0 points IF an object is moving with constant momen- tum vp = a 11 , 14 , 9 A kg · m / s , what is the magnitude oF the rate oF change oF momentum dvp dt ? Correct answer: 0 kg · m / s. Explanation: A constant momentum implies that the rate oF change oF momentum is zero. 002 (part 2 of 2) 10.0 points What is the magnitude oF the net Force acting on the object? Correct answer: 0 N. Explanation: By the Momentum Principle, Δ = v F net Δ t, iF the rate oF change oF momentum is zero, then the net Force is also zero. 003 (part 1 of 4) 10.0 points A ball whose mass is 1 . 4 kg is suspended From a spring whose sti±ness is 3 N / m. The ball oscillates up and down with an amplitude oF 15 cm. Take g = 9 . 8 m / s 2 . What is the angular Frequency ω ? Correct answer: 1 . 46385 rad / s. Explanation: The angular Frequency is given by ω = r k m = R 3 N / m 1 . 4 kg = 1 . 46385 rad / s . 004 (part 2 of 4) 10.0 points What is the Frequency? Correct answer: 0 . 232979 s - 1 . Explanation: The Frequency is given by f = ω 2 π = 0 . 232979 s - 1 . 005 (part 3 of 4) 10.0 points What is the period? Correct answer: 4 . 29223 s. Explanation: The period is given by T = 1 f = 1 0 . 232979 s - 1 = 4 . 29223 s . 006 (part 4 of 4) 10.0 points Suppose this apparatus was taken to the Moon, where the strength oF the gravitational feld is only 1/6 oF that on Earth. What would the period be on the Moon? (Consider care- Fully how the period depends on properties oF the system; look at the equation.) Correct answer: 4 . 29223 s. Explanation: This period is the same as the period you Found in part 3, since g does not enter the Formula For T . 007 10.0 points A mass oF 8 kg is connected to a hor- izontal spring whose sti±ness is 14 N / m.

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 4

Ch4-H4-solutions - chauhan(mmc2762 Ch4-H4 turner(56910 This...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online