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

Limitations of fusion bond epoxy coatings, Q. Limitations of fusion bond ep...

Q. Limitations of fusion bond epoxy coatings? The application of fusion bond epoxy coatings shall be limited to specially equipped coating yards or plants. The plant operations

Single direction pump, Can I have a quote for answers relating to this ques...

Can I have a quote for answers relating to this question (6 and 7) on my paper. Thanks

Other bearing materials, Other Bearing Materials An extensively hard w...

Other Bearing Materials An extensively hard wood of great density, termed as lignum vitae, has been employed for bearing applications. Along with water as cooling and lubrican

Engfine, how we made parts of engine

how we made parts of engine

Design of connecting rod, Design of Connecting Rod: Design and analyse...

Design of Connecting Rod: Design and analyse the stress distribution in a connecting rod as shown in Figure 5. The axial load which the connecting rod carries is 1kN and the m

Special tool and cleaning of part general service tips , Special Tool: Use...

Special Tool: Use special tools wherever applicable. Special tools are designed to dismantle or assemble a specific part or assemblies without causing damage to them. Cleaning

Clutch free play-clutch complaints, Clutch free play : Check for free play ...

Clutch free play : Check for free play of the clutch lever. It should be within 10-20 mm.

Features of the scheme entrepreneurship development, Features of the Schem:...

Features of the Schem:  Features of the scheme are as follows : DIC is the primary registering centre. Registration is voluntary and not compulsory. Two types of

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