A rotating object has an angular position represented by 8 = A + Bt + Ct² , where A , B , and C are constants. A student wants to represent a different rotating object that has twice the angular speed at every moment. To write the new function, the student could double B only double C' only double both A and B double both A and C double both B and C
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- y A (5.00 m) B (6.00 m) 25° 60° For the two vectors shown on x-y axes in the figure, what is the cross product ? O.17.2 m² k O24.6 m2 O 30.0 m2 30.0 m2 k 24.6 m2 kThe rotation of a 11 kg motorcycle wheel is depicted in the figure. The wheel should be approximated to be an annulus of uniform density with inner radius R1 = 27 cm and outer radius R2 = 33cm. Randomized Variables ω = 132 rad/sR1 = 27 cmR2 = 33 cm m = 11 kg Calculate the rotational kinetic energy in the motorcycle wheel if its angular velocity is 132 rad/s in J.The motorcycle travels with constant speed v0 along the sinusoidal path shown below. Answer the following questions: a) At the instant the motorcycle is at x = 3L/2, sketch the tangential and normal unit vectors on the path. b) Determine the acceleration of the motorcycle in tangential and normal components at the instant the motorcycle is at x = 3L/2. Express your answer in terms of v0, c, and L. In other words, leave your answer symbolic, because we don’t have any numbers. c) The speed of the motorcycle is constant, but you still have a non-zero acceleration. Explain why this is.
- A ball of radius R is rolling across a rough surface without slipping. What is the relationship between the angular speed w and the translational speed v? Select the correct answer Ov=w/R Ov=Rw O v = 1/w Ov=w Ov=R/w Image size: S M L Max +A bicycle racer is going downhill at 12.9 m/s when, to his horror, one of his 2.27 kg wheels comes off when he is 80.0 m above the foot of the hill. We can model the wheel as a thin-walled cylinder 85.0 cm in diameter and neglect the small mass of the spokes. Part A How fast is the wheel moving when it reaches the foot of the hill if it rolled without slipping all the way down? Η ΑΣΦ V₁ = 28.0 ? m/s Submit Previous Answers Request Answer × Incorrect; Try Again Part B How much total kinetic energy does the wheel have when it reaches the bottom of the hill? ΜΕ ΑΣΦ Ke 1780 Submit Previous Answers Request Answer × Incorrect; Try Again ? JHELP WITH THIS PLEASE, DO NOT DO b ONLY THE OTHER
- In the figure, bar AB has a mass of 50 kg, and is supported at rest by cords AC and BD. If we cut cord AC, determine: a. The tension in cord BD b. The angular acceleration of the barChrome mpt=2521128&cmid%3D1561298&page=D11 Course dashbo In Maxwell's Wheel experiment, which of the following can be said? a) b) c) d) Kinetic energy is converted into the potential energy Potential energy is converted into only rotational kinetic energy Potential energy is converted into only translational kinetic energy Potential energy is converted into not only rotational, but also translational kinetic energy e) Kinetic energy is occurred only one form as translational kinetic energy. tfen birini seçin: O BCase 1: A DJ starts up her phonograph player. The turntable accelerates uniformly from rest, and takes t1 = 11.6 seconds to get up to its full speed of f1 = 78 revolutions per minute. Case 2: The DJ then changes the speed of the turntable from f1 = 78 to f2 = 120 revolutions per minute. She notices that the turntable rotates exactly n2= 12 times while accelerating uniformly. a. Calculate the magnitude of the angular acceleration of the turntable (in radians/second2) while increasing to 120 RPM (Case 2). b. How long (in seconds) does it take for the turntable to go from f1 = 78 to f2 = 120 RPM?
- Assume that a physical pendulum can be modeled as a long, thin cylindrical rod, pivoting around one end. The mass of the pendulum is 630. g. Its period is 2.444 s. If its moment of inertia can be calculated by I = 1/3mL2, what is the length, L, of the rod? (The answer it’s supposed to be 1.06m) in the image there are two possible formulasThe ball as shown rotates counterclockwise in a circle of radius 3.00 m with a constant angular speed of 8.00 rad/s. At t = 0, its shadow has an x coordinate of 2.00 m and is moving to the right. (A) Determine the x coordinate of the shadow as a function of time in SI units.I need some help. Can you walk me through how to solve this problem? To throw the discus, the thrower holds it with a fully outstretched arm. Starting from rest, he begins to turn with a constant angular acceleration, releasing the discus after making one complete revolution. The diameter of the circle in which the discus moves is about 1.9 m. If the thrower takes 1.2 s to complete one revolution, starting from rest, what will be the speed of the discus at release?