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

Stacking in the applicators storage, Q. Stacking in the Applicators storage...

Q. Stacking in the Applicators storage? Stacking in the Applicator's storage yard shall be in accordance with good safety practices and/or OWNER Specifications. Sufficient spac

Piercing press tool, computer aided design of piercing press tool

computer aided design of piercing press tool

Welding, what is the average speed of travel in gas tungsten arc welding

what is the average speed of travel in gas tungsten arc welding

Closed system - thermodynamics system, Closed System: The system tha...

Closed System: The system that can exchange energy with the surrounding but not the mass. The quantity of matter hence remains fixed. And the system can be described as cont

Engineering drawing, in orthographic projection why in quadrant is taken in...

in orthographic projection why in quadrant is taken in anticlock wise

calculate the shear stress and angle-open square tube, The open square tub...

The open square tube is subjected to the torque T= DEF Nm as shown in Fig Q2. The tube has the length 1m and wall thickness 5mm. a)  Calculate the shear stress and angle of

Welding head, Welding Head Submerged arc welding head consists of the wir...

Welding Head Submerged arc welding head consists of the wire spool, wire feed system, flux delivery hopper and electrical contact nozzle. The electrode wire is unwound from the s

Welding, Why is the quality of welds produced by submerged arc welding very...

Why is the quality of welds produced by submerged arc welding very good#Minimum 100 words accepted#

Working of clutch, Working of Clutch : The clutches are operated mechanica...

Working of Clutch : The clutches are operated mechanically through linkages. When operator presses the clutch lever, the pressure on the clutch plates reduces to zero, hence the c

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