Determine the reaction at specific points, Mechanical Engineering

Determine the reaction at specific points:

A light rod AD can be supported by frictionless pegs at B and C and rests against frictionless wall at A as shown in the given figure . A force of 100N is applied at end D. Determine the reaction at points A, B and C.

Sol.: As roller supports at point B, C, so that the vertical reactions are there RB, RC. At point A rod is in the contact with wall that is wall give contact reaction to the rod say RA.


1449_Determine the reaction at specific points.png

Let rod is inclined at an angle of θ . The rod is in position of equilibrium.

ΣV = 0

RBcosθ   - RCcosθ   + 100cosθ = 0

RC  - RB = 100                                                                                                                                 ...(i)

Taking moment about A:

ΣMA = 100 × 0.6 - RC × 0.4 + RB × 0.2 = 0

2RC  - RB = 300                                                                                                                                ...(ii)

Solving the equation (i) and (ii)

RC = 200                                                                                         .......ANS

RB = 100            .......ANS

ΣH = 0

R + RBsinθ   - RCsinθ   + 100sinθ   = 0

RA  + 100sinθ   - 200sinθ   +100sinθ   = 0

RA = 0                                        .......ANS

Posted Date: 10/17/2012 4:22:03 AM | Location : United States

Related Discussions:- Determine the reaction at specific points, Assignment Help, Ask Question on Determine the reaction at specific points, Get Answer, Expert's Help, Determine the reaction at specific points Discussions

Write discussion on Determine the reaction at specific points
Your posts are moderated
Related Questions
Question 1 What is the eutectoid composition in the phase diagram? Question 2 For an alloy of 40%C/60%D at 400°C, indicate the phase/s that are present. It is not neces

how to find view factor for a cylinder to humanbody at a distance?

Q. What is the basic working of Cooling Tower? Cooling towers are generally located downwind from process units to adequately disperse vapors (from exchanger leaks) and minimiz

For a theoretical OTTO cycle operating on compression ratio of 8.5:1taking in air at 15C and 101.3kPa and having a maximum cycle temp of 1800C.Calculate the temp after compression,

construction and working of michelsons interferometer

Explain the Hydrostatic Pressure Hydrostatic Pressure also called Pressure because of Depth of a Fluid. It is required to define the pressure exerted by a static fluid column o

actual division 2km is shown as 1 cm in a map.construct a clean scale to measure km which can travel a distance upto 30 km.Show measurement of 18 km in the scale

Determining the Number of Kanban Card Sets: Example: Determining the Number of Kanban Card Sets X automotive, a company that makes muffler assemblies for the Mangalore Mo

Find out load lifted by the machine: An effort of 400 N is applied in a lifting machine. The distance moved through effort is 4 m and that by load is 40 cm. If the efficiency

diference between thermal and thermodynamic equallibrim