Calculate the force - pulley, Mechanical Engineering

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 ).

Posted Date: 1/29/2013 2:16:11 AM | Location : United States







Related Discussions:- Calculate the force - pulley, Assignment Help, Ask Question on Calculate the force - pulley, Get Answer, Expert's Help, Calculate the force - pulley Discussions

Write discussion on Calculate the force - pulley
Your posts are moderated
Related Questions
Maintenance Operations: The maintenance operations cover various activities such as: (a) making good rain cuts in embankment, (b) clearing the side ditches of vegetatio

Q. Explain about Fired Heaters and Combustion Engines? Fired heaters and combustion engines shall normally be located at a safe distance from hazardous areas as they provide po

defference between rankine and cornot cycle

Airport Layout: The main components of an airport are: (a)        Runways (b)       Taxiways (c)        Apron (d)       Terminal area (i)        Terminal build

Evaluate resultant of the system: Q: Figure given below shows two vertical forces and couple of moment 2000 Nm acts on horizontal rod, which is fixed at end A .  Determin

New Rule with Local One Step Ahead Prediction: WLS Rule Along with an observation to improve the performance measure of the system, a dynamic posteriori rule, the WLS that is

(a) What do you mean by vibration and the terminology used in it to be defined? (b) A body is subjected to two Harmonic motions as provided below x 1 = 10 sin (wt + π/6) and x

Define the Basic Components of an N.C System The basic components of an N.C system are as follow: a) Programmer of Instruction: - It is a set of direction which will tell th

Illustrate modified Rankine cycle in detail with p-v and T-S diagrams. Explain Carnot cycle in detail with T-S and P-V diagram, and also write expression for thermal efficiency,

Universal Support of Data Types To address inherent functional incompatibilities, we take the exact opposite route to the 'least common denominator' approach of previous soluti