Consider what happens if the block is suddenly disconnected from the spring, as shown below. Choose the correct equation for calculating the coefficient of kinetic friction (Uk) if it takes time t for the block to travel a displacement of Ax down the inclined surface. Note that this displacement is negative in the given rotated coordinate system, and that the acceleration of the block is constant so the motion is described by the four kinematic equations. Hint: remember that Ax = x – x0 - spring is disconnected! Ax 2 Az gt² cos(8) + tan (0) O puk Ar 2 gt² cos(0) + tan (0) Hk = cos (0) + sin (0) Az gt² Hk = 24 + sin (0) gt² O pk A - 2 sin (0) gt²

Consider what happens if the block is suddenly disconnected from the spring, as shown below. Choose the correct equation for calculating the coefficient of kinetic friction (Uk) if it takes time t for the block to travel a displacement of Ax down the inclined surface. Note that this displacement is negative in the given rotated coordinate system, and that the acceleration of the block is constant so the motion is described by the four kinematic equations. Hint: remember that Ax = x – x0 - spring is disconnected! Ax 2 Az gt² cos(8) + tan (0) O puk Ar 2 gt² cos(0) + tan (0) Hk = cos (0) + sin (0) Az gt² Hk = 24 + sin (0) gt² O pk A - 2 sin (0) gt²

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

See similar textbooks

Similar questions

NAME: Assume that box B starts from rest at a distance r = 0.5m from pin A. At time t = 0, the arm is at an angle of 0= 0°, and then starts moving at a constant angular acceleration of ë = 2d. Note that the motion occurs in the vertical plane and that the coefficient of static friction between the box and arm is Hs = 0.5. Calculate and plot the angle at which the box begins to slip. You must show all diagrams such as the Free Body Diagram/s and Kinetic Diagram/s. Hint: You might want to start with the kinematics and express 0 and as a function of time. Solving the equations of motion might require you to solve a nonlinear equation (in time) which you can try do by plotting the resulting equation as a function of time and finding at what time the function becomes zero. r B A
+ G In the above diagram, the wheel starts from rest and rolls without slipping. The force (you don't need the value) causes a constant angular acceleration of 7.112 rad/s2. The radius of the wheel is R - 0.392 m. What is the magnitude of the acceleration of the point at the top of the wheel at time t 1.400 s? This is the point at the outer edge directly above the center of gravity, Gwhere the force F connects to the wheel. Use units of m/s. Don't place units in your answer, 3 o
a.) What is the angle, measured relative to the positive x-axis, of the load's acceleration? (The correct answer is: -10.219 degrees) Just need the steps to get there b.) Three horses pull and guide a 132 kg payload down a river, exerting the forces shown in the figure, with F1 = 29 N, F2 = 38 N, F3 = 58 N, θ1 = 30°, and θ2 = 60°. What is the magnitude of the payload's acceleration? (The correct answer is: 0.7861 m/s^2)Just need the correct steps to get there
n engineer is designing a spring to be placed at the bottom of an elevator shaft. If the elevator cable breaks when the elevator is at a height H above the top of the spring, calculate the value that the spring constant k should have so that passengers undergo an acceleration of no more than 9.0g when brought to rest. Let N be the total mass of the elevator and passengers. Spring constant k that the spring should have so that passengers undergo an acceleration of no more that 9.0g
The 2-kg spool S fits loosely on the inclined rod for which the coefficient of static friction is μg = 0.34. (Figure 1) Figure A 0.25 m 5 1 of 1 Part A If the spool is located 0.25 m from A, determine the maximum constant speed the spool can have so that it does not slip up the rod. Express your answer to three significant figures and include the appropriate units. V = Value Submit μA Provide Feedback Request Answer Units
help! please write the complete solutions. Thumbs-up willl be given! DYNAMICS OF RIGID BODIES! A subway car leaves station A; it gains speed at the rate of 4ft /s2 for 6 s and then at the rate of 6ft /s2 until it has reached the speed of 48 ft/s. The car maintains the same speed until it approaches station B; brakes are then applied, giving the car a constant deceleration and bringing it to a stop in 6 s. The total running time from A to B is 40s. Determine the distance between stations A and B.
The concept of variable banking for racetrack turns is shown in the figure. If the two radii of curvature are PA = 303 ft and PB = 326 ft for cars A and B, respectively, determine the maximum speed for each car. The coefficient of static friction is μ = 0.93 for both cars. B 30° 23° Answers: VA= VB = i i www ft/sec ft/sec
A box with mass m = 2.75 kg rests on the top of a table. The coefficient of static friction between the box and the table is μs = 0.71 and the coefficient of kinetic friction is μk = 0.34. Write an expression for Fm the minimum force required to produce movement of the box on the top of the table. Solve numerically for the magnitude of the force Fm in Newtons. Write an expression for a, the box's acceleration, after it begins moving. (Assume the minimum force, Fm, continues to be applied.) Solve numerically for the acceleration, a in m/s2.
A child rides his bike at a speed of 5ft/s. The dimensions of the tire and sprockets are given below. D₁ DIS Diameter of tire, D₁ = 22in Diameter of rear sprocket, Drs = 2.75in Diameter of front sprocket, Dfs = 6.5in Diameter of crank, Dc = 10in V a. How fast is the rear wheel spinning in rad/s? b. How fast is the crank spinning in rad/s? X Bogo Note: This isn't an image I generated, and you may find that velocity vector near the bottom misleading. I wouldn't have drawn it Dimensions: c. How fast are his feet moving in ft/s relative to the bike frame? Dfs De BY NO SA 2020 Joe Graber
Q8. The sports car is traveling along a 30° banked road having a radius of curvature of p = 400 ft. If the coefficient of static friction between the tires and the road is µç = 0.19, determine the maximum safe speed so no slipping occurs. Neglect the size of the car. 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 32.2 ft/s². = Your Answer: Answer units 0 = 30°
The man pushes on the roller with force P through a handle that connects to the central axle of the roller. If the coefficient of static friction between the 43-lb roller and the floor is ls = 0.12, and the force Pis maximum so that the roller is about to slip, determine the angular acceleration of the roller (in rad/s²). Assume the roller to be a uniform cylinder. 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 = 32.2 ft/s2. 1.5 ft 30° Your Answer: Answer
End A of the link has a velocity of VA = 6 m/s . (Figure 1) Figure 2m < 1 of 1 Part A Determine the velocity of the peg at B at this instant. The peg is constrained to move along the slot. Express your answer to three significant figures and include the appropriate units. UB= 0 μA Value Submit Previous Answers Request Answer X Incorrect; Try Again Provide Feedback Units ?