System of parallel forces - mechanics, Mechanical Engineering

Assignment Help:

System of parallel forces:

A rigid body is subjected to system of parallel forces as shown in the figure. Reduce this system to,

(i) A single force system

(ii) A single force moment system at point B

 

Sol.: It is equivalent force system

1452_System of parallel forces.png

(Acting downward)

R = 15 - 60 + 10 -25 = -60 N

Now taking moment about A, apply varignon's theorem

R.X = 60 × 0.4 - 10 × 0.7 + 25 × 1.4

60.X = 52, × = 0.867 m Where X is distance of resultant from point A.
(1) A single force be 60 N which is acting downward

(2) Now a force of 60 N = A force of 60 N (down) at point B

and anticlockwise moment of 60 × (1.4 - 0.866) = 31.98 Nm at B.

60 N force and 31.98 Nm moment anticlockwise                                                         .......ANS

 


Related Discussions:- System of parallel forces - mechanics

Compute the force in the rod, Compute the force in the rod: A rod ABC ...

Compute the force in the rod: A rod ABC rotating at 20 rpm about a vertical axis through A, supports a ball of mass 10 kg at its lower end. It is fixed in position by the rod

Heat loss in cylindruical pipe, Explain which laws of physics are used to d...

Explain which laws of physics are used to discuss heat loss in a pipe, and briefly explain how the famous equation for the loss of heat in a cylindrical pipe is derived. Explain th

Som, Simple problem on direct stress and Bending stres

Simple problem on direct stress and Bending stress

Magnitude of the normal force, A Mercedes-Benz 300SL (m = 1600 kg) is parke...

A Mercedes-Benz 300SL (m = 1600 kg) is parked on a road that rises 20° above the horizontal. (a) What is the static frictional force that the ground exerts on the tires? (b) Wh

Find the resultant hydrostatic force, Question. Consider the triangular lam...

Question. Consider the triangular laminar D for given b and h shown below. (a) Find x L (s) and x R (s), the left and right ends of the elementary strip, of thickness ds, a

Determine the change in diameter, Determine the change in diameter: A ...

Determine the change in diameter: A thin spherical shell of 1.8 m diameter is 10 mm thick. This is filled with a liquid so that the internal pressure is 1 N/mm 2 . Determine t

Testing of resistance welds, TESTING OF RESISTANCE WELDS There are a nu...

TESTING OF RESISTANCE WELDS There are a number of destructive and non destructive tests available for testing the welds obtained by resistance welding. Radiographic or Ultrason

Illustrates about the need for reinforcement, Illustrates about the need fo...

Illustrates about the need for reinforcement? NEED FOR REINFORCEMENT Concrete is economical and durable and is currently universally utilized for footings. Plain concrete is

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