4. The chain is released from rest with the length b of overhanging links justsufficient to initiate motion(I) Neglect any friction and determine the velocity and acceleration of the chainwhen the last link leaves the edge.(2) For coefficient of friction between the links and the horizontal surface haveessentially the same value μ, determine the velocity and acceleration of the chainwhen the last link leaves the edge.3 Derive the equation in calculating the time from rest to leaving the table in forboth cases (with friction and no friction)L-b.μb

The objective of the question is to determine the velocity and acceleration of a chain when the last…

Answered: 4. The chain is released from rest 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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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
A spherical bowling ball with mass m = 4.6 kg and radius R = 0.105 m is thrown down the lane with an initial speed of v = 9.5 m/s. The coefficient of static friction between the ball and the ground is 0.35 and the coefficient for kinetic friction is μ = 0.3. Once the ball begins to roll without slipping it moves with a constant velocity down the lane. 1) What is the magnitude of the angular acceleration of the bowling ball as it slides down the lane? 2) What is magnitude of the linear acceleration of the bowling ball as it slides down the lane? 3) How long does it take the bowling ball to begin rolling without slipping? 4) Once it begins to roll without slipping, what is the force of friction on the ball?
Problem 1. Find the horizontal force magnitude P needed to start the motion of the block with mass mo in two scenarios: (a) when P is applied to the right and (b) when P is applied to the left. Develop a general solution for each scenario, and subsequently, substitute the values 0= 25°, m = mo = 2.5 kg, µs = 0.40, and μk = 0.35 into your expressions for evaluation. Hgs H k P (a) A mo 0 m P (b) B
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.
Two blocks A and B, each with a weight of 10 lb, are sliding along the inclined planes. Calculate the magnitude of the acceleration of the blocks when the kinetic friction coefficient is 0.1. Present your answer in ft/sec² using 3 significant figures. 60° B 30⁰
A block weighing 2 KN is being dragged along a rough horizontal plane by a force P= 500N. The line of the force P makes an angle of 12 degrees above the horizontal plane. Coefficient of friction is 0.10. A. Compute the velocity of the block when it has travelled a distance of 5 m from rest. B. Compute the acceleration of the block C. Compute the velocity of the block 2 second after it moves from rest.
5) A block weighing 50 lb is shown on an inclined surface. The block is released from rest at the po- sition shown. The spring has a spring constant of k = 10 lb/in., and the coefficient of friction be- tween the block and the incline is 0.3. What is the maximum compression of the spring? 6) For the system in Question 5, what is the velocity of the block the moment it leaves the spring? 50 lb 10' 30° K www. Page 1 of 2

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