6 rad/s a = 4 rad/s² 0,5 h A
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

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
- A bicycle tire is spinning clockwise at 3.10 rad/s. During a time period At = 1.70 s, the tire is stopped and spun in the opposite (counterclockwise) direction, also at 3.10 rad/s. Calculate the change in the tire's angular velocity Aw and the tire's average angular acceleration av: (Indicate the direction with the signs of your answers.) HINT (a) the change in the tire's angular velocity Aw (in rad/s) rad/s (b) the tire's average angular acceleration a. (in rad/s2) 'av rad/s? Need Help? Read It Watch ItThe platform shown in the figure below (The Merry-Go-Round) has a mass of M- 100 kg and radius R 2.0 m. Lia (m 30 kg) walks slowly from the rim of the disk toward its center. If the angular speed of the system is 2.0 rad/s when Lia is at the rim, what is the angular speed when she reaches a pointr 3- 0.5 m from the center? MA pitcher throws a curveball that reaches the catcher in 0.64 s. The ball curves because it is spinning at an average angular velocity of 380 rev/min (assumed constant) on its way to the catcher's mitt. What is the angular displacement of the baseball (in radians) as it travels from the pitcher to the catcher?
- A 25.0 cm radius wheel rolls from rest up to a speed of 6.00 m/s while traveling a distance of 10.0 m. How many rotations does the wheel go through during this motion? What was is angular acceleration during this motion?Not sure how to start this problem. Could I begin this problem by finding angular velocity with the rotations and time; using this to find the velocity?Refer to the question below.
- A bicycle tire is spinning clockwise at 2.20 rad/s. During a time period At = 2.50 s, the tire is stopped and spun in the opposite (counterclockwise) direction, also at 2.20 rad/s. Calculate the change in the tire's angular velocity Aw and the tire's average angular acceleration aay. (Indicate the direction with the signs of your answers.) HINT (a) the change in the tire's angular velocity Aw (in rad/s) rad/s (b) the tire's average angular acceleration a (in rad/s2) rad/s2. At the instant shown, end 4 of the rod has the velocity and acceleration shown. Determine the angular acceleration of the rod and the acceleration of end B of the rod. 4 m aA = 5 m/s² VA = 6 m/s 5 m BA solid metal disk with moment of inertia I, radius R, and mass m1 can rotate freely about a frictionless axis passing through its center. A light string is wrapped around the disk and connects to a hanging mass m2. The hanging mass is released from rest at a distance d above the ground and accelerates downward with acceleration awhile the disk rotates through an angle q. a) Find an expression for the angular accelerationaof the diskin terms of m2, I, R, and any necessary constants. b) Find an expression for the time it takes for the hanging mass to reach the ground. Write your answer in terms of q, a, and any necessary constants. c) Find an expression for the angular velocity of the disk just before the hanging mass hits the ground. Write your answer in terms of q, a, and any necessary constants.