236619 inFind the tension Tin the rope.Answer: T=_IbThe 170-lb exerciser is beginning to execute a bicep curt. When in the position ahownwith his right elbow fixed, he causes the 19-lb cylinder to accelerate upward at therate 0.29g. Neglect the effecta of the mass of his lower arm and estimate the normalreaction forces at A and B. Friction ia sufficient to prevent slipping.

Answered: Image /qna-images/answer/2dc51b0d-ae57-43cd-8079-dfd89d405acd.jpg

Answered: The 170-lb exerciser is beginning to…

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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8. The 20 kg uniform disk of radius r= 0.4 m is at rest on the incline (0 = 20°) when a constant force T= 200 N is applied as shown pulling the cord that is securely wrapped around the rim of the disk. If the coefficients of friction on the incline are u, = 0.3 and u, = 0.2, determine the friction force between the disk and the incline, the angular acceleration of the disk, and the acceleration at the mass center G. F (magnitude and direction) - T a (magnitude and direction) =. ac (magnitude and direction) = G
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A garage door is mountedon an overhead rail (Fig.).The wheels at A and B have rustedso that they do not roll, but ratherslide along the track. The coefficientof kinetic friction is 0.52. The distancebetween the wheels is 2.00 m,and each is 0.50 m from the verticalsides of the door. The door is uniformand weighs 950 N. It is pushedto the left at constant speed by a horizontalforce F S , that is applied as shown in the figure. (a) If the distanceh is 1.60 m, what is the vertical component of the force exerted on eachwheel by the track? (b) Find the maximum value h can have withoutcausing one wheel to leave the track.
A round object of mass M and radius R roll down a hill of height h. Calculate the linear speed of the object (in terms of M, g, R, and h) when it reaches the bottom of the hill.
Dynamic Lesson Blocks A and B both have mass m. Find the maximum horizontal force P that can be applied to the B block, in terms of given, so that the A block does not have any relative movement on the B block.[Note: All surfaces are non-friction].
5. The arms of a Porter governor are 300 mm long. The upper arms are pivoted on the axis of rotation and the lower arms are attached to the sleeve at a distance of 35 mm from the axis of rotation. The load on the sleeve is 54 kg and the mass of each ball is 7 kg. Determine the equilibrium speed when the radius of the balls is 225 mm. What will be the range of speed for this position, if the frictional resistances to the motion of the sleeve are equivalent to a force of 30 N? [Ans. 174.3 r.p.m. ; 8.5 r.p.m.]
dynamics
will rate if correct
PROBLEM NUMBER 2 DYNAMICS THE CIRCULAR PACKAGE (B) AND THE BOX PACKAGE (A) SHOWN BELOW HAS AN IDENTICAL MASS OF 2.70 kg. IF THE COEFFICIENT OF KINETIC FRICTION BETWEEN BOX A AND THE CONTACT SURFACE IS 0.15. CALCULATE THE ACCELERATION OF BOX A IF THE CIRCULAR PACKAGE MOVES DOWN WARD A 34°
1. The two situations (a) and (b) shown seem to the untrained eye to be identical. To see if they are different, calculate the vertical acceleration a of the 100-lb weight for both cases. Neglect friction and mass of the pulleys. * Note: For this, and all future kinetics problems, you must draw free-body diagrams (FBD). 100 lb 100 lb 150 lb 150 lb • Make them big Make them clear (a) (b) • Only put forces on FBD
The 6-Kg package is just nudged from rest over the čdje of the chate, The coe fficient of Kine tic fhiction between peckage aad chate is he The ligit has stiffness 60 KNm and Spring initially undeformed. d is 4m- Mx 40° Find the coefficient of Kinetic friction if the maximum com pression of The sp ing is 50 mm.

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