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Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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
Transcribed Image Text:The 21-kg uniform thin hollow square plate is pinned at point O, and its side L = 0.5
m. If it is subjected to the constant moment M = 78 N·m and is released from rest
from the position as shown, determine its angular velocity W (in rad/s) when it has
rotated 45°. Please pay attention: the numbers may change since they are
randomized. Your answer must include 2 places after the decimal point. Take g =
9.81 m/s².
L
Your Answer:
Answer
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- For the circular thin plate with a square hole as shown in the image below, its radius R = 0.48 m and the side of the square /= 0.21 m, and the material has a mass per unit area of 12 kg/m2. If at the instant shown, it is subjected to a force P = 38 N, and has a counterclockwise angular velocity of W = 2.6 rad/s, determine magnitude of the support reaction at point O at this instant. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 9.81 m/s?. R Parrow_forwardThe 23-kg uniform thin hollow square plate is pinned at point O, and its side L = 0.3 m. If it is subjected to the constant moment M = 82 N·m and is released from rest from the position as shown, determine its angular velocity W (in rad/s) when it has rotated 45 Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point. Take g = 9.81 m/s². M Your Answer: Answerarrow_forward૨૩: If P = 200 N and the 15-kg uniform slender rod starts from rest at 0 = 0°, determine the rod's angular velocity at the instant just before 0 = 45°. Ans.: @₂ = 4.97 rad/s 45° 600 mm P = 200 N SOCarrow_forward
- For the circular thin plate with a square hole as shown in the image below, its radius R = 0.32 m and the side of the square /= 0.18 m, and the material has a mass per unit area of 12 kg/m². If at the instant shown, it is subjected to a force P = 30 N, and has a counterclockwise angular velocity of W = 4.2 rad/s, determine magnitude of the support reaction at point O at this instant. Please pay attention: the numbers may change since they are randomized. Your answer must include 2 places after the decimal point, and proper unit. Take g = 9.81 m/s². R @ Your Answer: Answer units Parrow_forwardThe 18-kg rod AB is pin-connected at A and subjected to a couple moment of M =15 N- m The rod is released from rest when the spring is unstretched at 0 = 30°. As the rod rotates, the spring always remains horizontal, because of the roller support at C. (Figure 1) Determine the rod' s angular velocity, measured clockwise, at the instant 0 = 60°. Express your answer using three significant figures. Enter positive value if the angular velocity is clockwise and negative value if the angular velocity is counterclockwise. vec rad/s k = 40 N/m 0.75 m M = 15 N- marrow_forwardThe system is made up of the 1-m, 6.5-kg uniform rod AB and the two uniform disks (each of 0.19 m radius and 1.5 kg mass). If the system is released from rest when = 80°, when rod AB has just become horizontal, determine the coefficient C in the expression Cw² which is the kinetic energy of rod AB at this instant. Assume the disks roll without slipping. Your answer must include 2 places after the decimal point. Please pay attention: the numbers may change since they are randomized. AB' Take g= 9.81 m/s². A-L B m Your Answer: Answerarrow_forward
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