2. Problem 16.4 (Textbook): The disk is originally rotating at wo = 12 rad/s (Figure 1). If it is subjected to a constant angular acceleration of a = 20 rad/s?, determine the magnitudes of the velocity and the n and t components of acceleration of point B when the disk undergoes 2 revolutions. wo = 12 rad/s B 0.4 m 0.5 m-A Figure
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1. The disk is originally rotating at ω0 = 12 rad/s (Figure 1). If it is subjected to a constant
2. The disk is originally rotating at ω0 = 12 rad/s (Figure 1). If it is subjected to a constant angular acceleration of α = 20 rad/s2, determine the magnitudes of the velocity and the n and t components of acceleration of point B when the disk undergoes 2 revolutions.
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- The disk starts at wo = 2 rad/s when 0 = 0, and is given an angular acceleration a = (0.30) rad/s², where is in radians. (Figure 1) Figure 0.4 m P 1 of 1 > Part A Determine the magnitude of the normal component of acceleration of a point P on the rim of the disk when 0 = 2 rev. Express your answer to three significant figures and include the appropriate units. an = Submit Part B at = O Submit μÅ Value Request Answer Determine the magnitude of the tangential component of acceleration of a point P on the rim of the disk when 0 = 2 rev. Express your answer to three significant figures and include the appropriate units. Provide Feedback HA Value Units Request Answer Units ? www ?A cylinder 0.190 m in diameter rotates in a lathe at 690 rpm What is the tangential speed of the surface of the cylinder? Express your answer in meters per second. 阳 AZ中 m/s Submit Request Answer Part B The proper tangential speed for machining cast iron is about 0.540 m/s. At how many revolutions per minute should a piece of stock 0.0800 m in diameter be rotated in a lathe to produce this tangential speed? Express your answer in revolutions per minute. ΑΣΦ rpm Submit Request AnswerAt its lowest setting a centrifuge rotates with an angular speed of ω1 = 250 rad/s. When it is switched to the next higher setting it takes t = 6.5 s to uniformly accelerate to its final angular speed ω2 = 750 rad/s. A. Calculate the angular acceleration of the centrifuge α1 in rad/s2 over the time interval t. B. Calculate the total angular displacement (in radians) of the centrifuge, Δθ, as it accelerates from the initial to the final speed.
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