The peg is constrained to move in the slots of the fixed bar CD and rotating bar AB. When 0-30° the angular velocity and angular acceleration of arm AB are 0-2 rad/s and 0-3 rad/s², respectively (Figure 1) Part A Determine the magnitude of the velocity of the peg Pat this instant Express your answer to three significant figures and include the appropriate units. V = Submit ▾ Part B Value a = HA 3 a C Request Answer Submit Determine the magnitude of the acceleration of the peg P at this instant. Express your answer to three significant figures and include the appropriate units. Value Units μA 4 A C Request Answer ? Units ?

The peg is constrained to move in the slots of the fixed bar CD and rotating bar AB. When 0-30° the angular velocity and angular acceleration of arm AB are 0-2 rad/s and 0-3 rad/s², respectively (Figure 1) Part A Determine the magnitude of the velocity of the peg Pat this instant Express your answer to three significant figures and include the appropriate units. V = Submit ▾ Part B Value a = HA 3 a C Request Answer Submit Determine the magnitude of the acceleration of the peg P at this instant. Express your answer to three significant figures and include the appropriate units. Value Units μA 4 A C Request Answer ? Units ?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Note: this problem does not require a kinematics table, as it does not involve the angular velocity changing at all. Both answers only require a single equation which you can find in your book. 3. The tire of a car has a radius of 0.26m. As the car travels down the street, the wheel spins with an angular velocity of w-80rad/s. a. How ow many times does the wheel spin per second? b. How fast is a point on the edge of the tire moving, in meters per second? (Incidentally, this is equal to the speed of the car as it drives down the road.)
Part A A 5 N and a 10 N force act on an object. The moment arm of the 5 N force is 0.2 m. If the 10 N force produces five times the torque of the 5 N force, what is its moment arm? Express your answer in meters to one significant figure. ΙΠ ΑΣΦ Submit Request Answer ? m
Let's begin with the angular acceleration of a compact disk (CD). To play music the CD must rotate at high speed while a laser reads data encoded in a spiral pattern on the disk. The disc has radius R = 6.0 cm = 0.060 m; when data are being read, it spins at 7200 rev/min. What is the CD's angular velocity w in radians per second? How much time is required for it to rotate through 90° ? If it starts from rest and reaches full speed in 4.0 s, what is its average angular acceleration? Figure 02 Δθ = 900 w= 7200 rev/min R = 0.060 m 1 of 1 0₁ SOLVE To convert the disc's angular velocity w to radians per second, we multiply by (1 min/60 s) and by (2π rad/1 rev): (1 min) (2π rad 1 rev From the definition of angular acceleration (Cav rest), the average angular acceleration is Part A - Practice Problem: W= From the definition of angular velocity (w = A0/At), we find the time At for the disc to turn through 90° (π/2 rad): π/2 rad 754 rad/s Aw/At), if the disc reaches a final angular velocity of…
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A discus thrower starts from rest and begins to rotate with a constant angular acceleration of 2.4 rad/s2rad/s2 . Part A How many revolutions does it take for the discus thrower's angular speed to reach 5.0 rad/srad/s ? Express your answer using two significant figures. Part B How much time does this take? Express your answer using two significant figures.
(Figure 1) Part A If gear A rotates with a constant angular acceleration of a = 90 rad/s? , starting from rest, determine the time required for gear D to attain an angular velocity of 600 rpm. Gears A, B, C, and D have radii of 15 mm, 50 mm, 25 mm, and 75 mm, respectively. Express your answer to three significant figures and include the appropriate units. HẢ Value Units Submit Request Answer Figure < 1 of 1 Part B Also, find the number of revolutions of gear D to attain this angular velocity. Express your answer to three significant figures and include the appropriate units. vec ? Op = rev. Submit Request Answer
Actionspulley which can be moduled as a 0.32 kg sold cylinder with a 0.31 maus, has a repe going over d as shown in Part A The sions the pe are 12 N and 10 N. What is the angular acceleration of the pulley? Express your answer in radians per second equared to two significant figures. 1. Submit ATA ? rel/ 12 N Review Constants Periodic Tab 10 N Next>
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Because 2? rad = 1 rev, the angular displacement in part (b) corresponds to 2.23 rev. In general, dividing the number of radians by 6 gives a good approximation to the number of revolutions, because 2? ~ 6.QUESTION If the angular acceleration were doubled for the same duration, by what factor would the angular displacement change? PRACTICE IT Use the worked example above to help you solve this problem. A compact disc rotates from rest up to an angular speed of 34.0 rad/s in a time of 0.889 s. (a) What is the angular acceleration of the disc, assuming the angular acceleration is uniform? rad/s2(b) Through what angle does the disc turn while coming up to speed? rad(c) If the radius of the disc is 4.45 cm, find the tangential speed of a microbe riding on the rim of the disc. m/s(d) What is the magnitude of the tangential acceleration of the microbe at the given time? m/s2 EXERCISEHINTS: GETTING STARTED | I'M STUCK! Use the values from PRACTICE IT to help you work this exercise.…