Calculations for force, Mechanical Engineering

Assignment Help:

Calculations for force:

A square block having 25cm side and weighing 20N is hinged at point A and rests on rollers at point B as shown in the figure given below. It is pulled by string attached at point C and inclined at 300 with horizontal. Make calculations for force P to be applied so that block gets lifted off the roller only.

687_Calculations for force.png

Sol.: From Free body diagram the block is subjected to following set of forces.

1. Force P

2. Weight of block W

3. Reaction RA  at hinged point

4. When block is at the state of being lifted off the roller only, reaction RB  = 0

∑MA = 0

- Pcos30° × 0.25 - Psin30° × 0.25 + 20 × 0.125 = 0

- 0.22 P - 0.125P + 2.5 = 0

P = 7.27N                               .......ANS


Related Discussions:- Calculations for force

Thermodynamics, when does water convert in to ice at vaccum pressure

when does water convert in to ice at vaccum pressure

Isentropic flow through the nozzle, Isentropic flow through the nozzle: ...

Isentropic flow through the nozzle: In an isentropic flow through the nozzle, air flows at rate of 600Kg/hr. At inlet to the nozzle, the pressure is 2Mpa and temperature is 1

Boiler, boiler water hammering

boiler water hammering

Loads analysis, Complete the following problem from the text by Megson.  No...

Complete the following problem from the text by Megson.  Note that since the answers are given, it is essential that you show and justify all work to receive full credit.  Required

Thermodynamics, can u please explain me d concept of 2nd law of thermodynam...

can u please explain me d concept of 2nd law of thermodynamics. I am not so sure about it ??

Atomic hydrogen welding, Atomic Hydrogen Welding In this process, an a...

Atomic Hydrogen Welding In this process, an arc is struck between two tungsten electrodes using AC power supply.The Streams of hydrogen gas are passed from orifices around the

Longitudinal strain produced - hollow cast iron cylinder, Longitudinal stra...

Longitudinal strain produced - hollow cast iron cylinder: A hollow cast iron cylinder 4 m long, 300 mm is the outer diameter, and thickness of metal 50 mm is subjected to cen

What do you mean by compression moulding, Q. What do you mean by Compressio...

Q. What do you mean by Compression moulding? In compression molding, a material normally in power or perform shape , is loaded directly into the hot die cavity, pressure from

What is epoxy powder, Q. What is Epoxy Powder? The coating manufacturer...

Q. What is Epoxy Powder? The coating manufacturer shall be consulted as to the product best suited to the Applicator's speed of coating, pipe diameter and wall thickness, and t

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