Calculate the force - pulley, Mechanical Engineering

Assignment Help:

Calculate the force - pulley:

A string is passing over a smooth pulley. The string supports the mass m on one side which is to be pulled up with acceleration a. calculate the force T which must be applied at the end B of the string AB. Treat the block as a particle.

Solution

Figure (b) shows the free body diagram of the mass. The forces acting on it shall be the tension T in the string and the weight mg of the block. Since the block moves upwards, the inertia force Fi = - ma will be directed downwards. The block may be considered in equilibrium under the action of forces T, mg and ma.

          ∴ T - m g - m a = 0

or         T = m a + m g

                = m (a + g )

Therefore, the tension T to be applied to the end B shall equal to T = m (a + g ).


Related Discussions:- Calculate the force - pulley

Scheduling and sequencing, Scheduling and Sequencing: This unit begin ...

Scheduling and Sequencing: This unit begin with the basic concept and the role of scheduling in industry. Several job- sequencing rules to address the manufacturing process ar

Determine the reaction - cantilever, Determine the reaction: The cant...

Determine the reaction: The cantilever is shown in the figure given below; determine the reaction when it is loaded.   In cantilever at fixed end ( A ) there is three reac

What do you mean by newtons rings, When a Plano-convex lens of large radius...

When a Plano-convex lens of large radius of curvature is placed on a glass plate with its convex surface, a thin air film of gradually increasing thickness is formed between the up

Objectives of motorcycle servicing , Objectives After studyingmotercyc...

Objectives After studyingmotercycle servicing, you should be able to appreciate the importance of regular servicing and maintenance of a motorcycle and also to recommen

Trippaing, how thw trippaning process work

how thw trippaning process work

Newtons first law, Problem: Newton's First Law Newton's First Law of Mo...

Problem: Newton's First Law Newton's First Law of Motion says that, in the absence of external forces, an object at rest stays at rest and an object in motion continues at cons

Evolution of specific volume of wet saturated steam, Evolution of Specific ...

Evolution of Specific volume of wet saturated steam -thermodynamics : Specific volume of wet saturated steam (V we t ) It is volume occupied by unit mass of wet satu

The radius dimension command, The Radius Dimension Command The Radius c...

The Radius Dimension Command The Radius command is quite identical to the Diameter command except that the dimension measurements a radius rather than a dimension and the resul

Automatic feature recogniton system, I have been tasked to design a web bas...

I have been tasked to design a web based automatic feature recognition system for a press brake bending machine, how do I go about It?

Determine the force to pull box along a level surface, Determine the force ...

Determine the force to pull box along a level surface: A metal box having weight 10KN is pulled along a level surface at the uniform speed by applying horizontal force of 350

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd