12-147. The jet plane is traveling with a speed of 120 m/swhich is decreasing at 40 m/s² when it reaches point A.Determine the magnitude of its acceleration when it is atthis point. Also, specify the direction of flight, measuredfrom the x axis.*12-148. The jet plane is traveling with a constant speedof 110 m/s along the curved path. Determine the magnitudeof the acceleration of the plane at the instant it reachespoint A(y= 0).y = 15 In 80- 80 mProbs. 12–147/148

Given data The speed of the plane is v =120 ms The tangential acceleration is at=-40 ms2 The…

Answered: 12-147. The jet plane is traveling with…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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at- 12 rad/s 16-3. The disk is originally rotating at a = 12 rad/s. If it is a = 20 rad/s?, determine the magnitudes of the velocity and the n and t components of acceleration of point A at the instant i = 2s 0.4 m 0.5 m-A
1. The disk is originally rotating at wo=12 rad/s. 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 A at the instant t= 2 s. wo = 12 rad/s 0.4 m -0.5 m--►A
12-193. The slotted arm OA rotates counterclockwise about O with a constant angular velocity of . The motion of pin B is constrained such that it moves on the fixed circular surface and along the slot in OA. Determine the magnitudes of the velocity and acceleration of pin B as a function of u. r = 2 a cos 0 0 B A
The slotted arm OA rotates about point 0 with constant angular velocity 0. The motion of the pin B is Onstrained such that it moves on the fixed circular surface and along the slot OA. Determine the magnitudes of the velocity and acceleration in terms of p and 0. v = re, +rðe, 4. a = (F -re? )e, + (r®+ 2re )e,
The angular acceleration of the disk is defined by a =(3t²+ 12) rad/s2, where t is in seconds. If the disk is originally rotating at wo = 12 rad/s, determine the magnitude of the velocity and the n and t components of acceleration of point A on the disk when t = 2 s. = 12 rad/s В 0.4 m 0.5 m A
12-183. A truck is traveling along the horizontal circular curve of radius r = 60 m with a constant speed v = 20 m/s. Determine the angular rate of rotation ở of the radial line r and the magnitude of the truck's acceleration. *12-184. A truck is traveling along the horizontal circular curve of radius r = 60 m with a speed of 20 m/s which is increasing at 3 m/s², Determine the truck's radial and transverse components of acceleration. r = 60 m
*12-124. The box of negligible size is sliding down along a curved path defined by the parabola y = 0.4x2. When it is at A(xA = 2 m, ya = 1.6 m), the speed is v = 8 m/s and the increase in speed is dv/dt = 4 m/s. Determine the magnitude of the acceleration of the box at this instant. y -04 2 m Prob. 12-124
2. The angular acceleration of the disk is defined by a= 3t² + 12 rad/s, where t is inn seconds. If the disk is originally rotating at wo=12 rad/s, determine the magnitudes of the velocity and the n and t components of acceleration of point A on the disk when t= 2 s. n = 12 rad/s 0.4 m -0.5 m-►A
Find the angle between the velocity and acceleration vectors at t=2s and t=5s of the moving part with respect to the position vector R= (2t3 -5t2 )i-(4t4 )j in the plane.
The slider P can be moved inward by means of the string S, while the slotted arm rotates about point O. The angular position of the arm is given by θ = 0.60t - 0.039t2, where θ is in radians and t is in seconds. The slider is at r = 1.47 m when t = 0 and thereafter is drawn inward at the constant rate of 0.12 m/s. Determine the velocity v and acceleration a of the slider when t = 2.0 s. Express your answers in the x-y coordinate system.
The roller coaster car travels down the helical path at constant speed such that the parametric equiations that define its position are x = c sin kt , y = c cos kt, z= h - bt, where c, h and b are constants. Determine the magnitudes of its velocity and acceleration.
The slotted fork is rotating about O at a constant rate of Ô = 3. Determine the magnitude of the acceleration of the pin A at the instant e = 360°. The path is defined by the spiral groove r= (5+%) inches, where e is in radians. ở = 3 rad/s = (5 + 0/T)in.-

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