Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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- Block A has a mass of 10 kg and bloc B has a mass of 2 Kg and are kept at rest. The 2 blocs are comected by a cord passing by a wheel at the top of the incline. The surface of the incline has a friction coefficient -0.12. The angle of the incline is 0= 30°. A is at 6 meters above the incline floor. After being released from rest, the bloc A will move down. Determine the total energy of the bloc A after it has moved down the incline by 4 meters.. Calculate its velocity. 6 m Barrow_forwardDetermine the speed v which the 690-kg four-man bobsled must have in order to negotiate the turn without reliance on friction. Also find the net normal force N exerted on the bobsled by the track. 23° Answers: V= i N = i -p=58 m m/s kNarrow_forwardThe crate, which has a mass of 130 kg, is subjected to the action of the two forces. (Figure 1) Figure 800 N 30° 1000 N 3 Part A If it is originally at rest, determine the distance it slides in order to attain a speed of 9 m/s. The coefficient of kinetic friction between the crate and the surface is μ = 0.2. Express your answer to three significant figures and include the appropriate units. S = Value Submit O μA Provide Feedback Review Request Answer Units ? Next >arrow_forward
- 2. The 10-Ib block has a speed of 4 ft's when the force of F= (8t?) Ib is applied. Determine the velocity of the block when t= 2 s. The coefficient of kinetic friction at the surface is = 0.2. v = 4 ft/s F= (8°) lbarrow_forwardQ14. As shown in the image below, the 20-kg box is pulled up the inclined plane with a constant velocity of 4.7 m/s. If the coefficient of kinetic friction between the box and the inclined plane is µ = 0.1, determine the power of force F. Please pay attention: the numbers may change since they are randomized. Your answer must include 1 place after the decimal point, and proper SI unit. Take g = 9.81 m/s². F Your Answer: Answer 30° unitsarrow_forwardQ21. The 10-lb block A attains a velocity of 7 ft/s in 5 seconds, starting from rest. Block Bhas a weight of 9 lb. Determine the coefficient of kinetic friction between block A and the horizontal plane. Neglect the weight and friction of the pulley. Please pay attention: the numbers may change since they are randomized. Your answer must include 3 places after the decimal point. Take g = 32.2 ft/s². A Your Answer: Answer Barrow_forward
- Question: The 250-kg crate rests on the ground for which the coefficients of static and kinetic friction are μs = 0.5 and μk = 0.4, respectively. The winch delivers a horizontal towing force T to its cable at A which varies as shown in the graph. Originally the tension in the cable is zero Part A) Determine the speed of the crate when t = 3.9 s. Hint: First determine the force needed to begin moving the crate. Express your answer to three significant figures and include the appropriate units.arrow_forwardIf the force exerted on cable AB by the motor is F = ( 110 t 3/2 ) N, where tt is in seconds, determine the 55-kg crate's velocity when ttt = 5 s . The coefficients of static and kinetic friction between the crate and the ground are μs = 0.37 and μk = 0.29, respectively. Initially the crate is at rest. (Figure 1)arrow_forwardThe initially stationary 24-kg block is subjected to the time-varying force whose magnitude P is shown in the plot. Note that the force is zero for all times greater than 5 s. Determine the time t, at which the block comes to rest. P, N 24 kg 26° T Mk=0.43 Hg = 0.51 Answe: ts = i 173 S 5 t, sarrow_forward
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