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

Functional areas of geometric modeling, Q. Functional areas of geometric mo...

Q. Functional areas of geometric modeling? Drafting • Automatic planar cross-sectioning. • Automatic hidden lines and surface removal. • Automatic production of s

Explain extension of screw conveyor by hydraulic cylinder, Explain Extensio...

Explain Extension of screw conveyor by hydraulic cylinder "Extension of screw conveyor with the help of linkage arrangement by hydraulic cylinder and hinged joint" Procedur

Hydrostatic pressure, can a swimming pool that is full be cracked or lifted...

can a swimming pool that is full be cracked or lifted by hydrostatic pressure?

Classify the two wheeler engines, (a) Classify the two wheeler engines. ...

(a) Classify the two wheeler engines. (b) Define the following components and their uses in engine with the help of engine diagram. (i) Crankcase (ii) Piston and Piston pi

Difficulties with motion sickness, In designing rotating space stations to ...

In designing rotating space stations to give for artificial-gravity environments, one of the constraints that must be considered is motion sickness. Studies have shown that the neg

Create a pay - off table, Bhasker operates a retail shop and sells the high...

Bhasker operates a retail shop and sells the high priced "Hot Food" thermoware. Each unit I priced at Rs.250. Experience has shown that the weekly demand schedule for items is as f

Resultant, procedure to find resultant of several forces acting at a point

procedure to find resultant of several forces acting at a point

Define the types of clamping device, Define the Types of Clamping Device ...

Define the Types of Clamping Device Clamping screw. Hook bolt clamp. Lever clamp.   a) Bridge clamp. b) Heel clamp. c) Swinging strap clamp. d) Hi

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