Part B and C QuestionThe two uniform thin discs shown in the figure rest on a horizontal plane and areconnected through frictionless pin-joints at A and B by a rigid light rod whichremains horizontal. The mass of disc A is 15 kg. and that of disc B is 25 kg. Thestatic coefficients of friction between the plane and discs A and B are, respectively,(,),= 0.2 and (,), = 0.55.At the instant shown, a counter-clockwise moment T = 125 Nm. is applied to discB. You are required to,(a) identify the type of ensuing motion of the discs,(b) draw the free-body, kinematic and kinetic diagrams of the discs,(c) assuming motion initiates with pure rolling, write down theappropriate kinematic and kinetic relationships with respect to asuitable global axes system, and(d) determine, in magnitude and direction, the angular accelerationsof the discs and force developed in the rod AB at the instant themoment T is applied.(e) Validate the pure rolling assumption in part(c) and if slipping isanticipated, explain with supporting arguments, whether one ofthe discs will first slip, or both discs will slip at the same time.You must clearly show details of the analysis that you have carried out usingrelationships in part (c) to arrive at subsequent results in a neat, logical way.0.45 m60⁰0.6 m30.45 m60°0.6 m

In this question, it is asking about the solution of part B only so we will provide the solution for…

The two uniform thin discs shown in the figure rest on a horizontal plane and are connected through frictionless pin-joints at A and B by a rigid light rod which remains horizontal. The mass of disc A is 15 kg. and that of disc B is 25 kg. The static coefficients of friction between the plane and discs A and B are, respectively, (,),= 0.2 and (,), = 0.55. At th 405

The two uniform thin discs shown in the figure rest on a horizontal plane and are connected through frictionless pin-joints at A and B by a rigid light rod which remains horizontal. The mass of disc A is 15 kg. and that of disc B is 25 kg. The static coefficients of friction between the plane and discs A and B are, respectively, (,),= 0.2 and (,), = 0.55. At th 405

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.72P

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Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

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Part B and C

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