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

Indicator diagram and indicated power - thermodynamics, Indicator diagram a...

Indicator diagram and indicated power: An indicated diagram is graph between pressure and volume. The former being taken on the vertical axis and latter on the horizontal axis

Find out the slope and deflection at the free end, Find out the slope and d...

Find out the slope and deflection at the free end: Discover the slope and deflection at the free end of a cantilever shown in Figure. Take EI = 200 × 10 6 N-m 2 . Solutio

Corporate level - safety organization, Corporate level - Safety Organizatio...

Corporate level - Safety Organization This is a corporate level and there should be a company director which is engaged in formulating safety policies at corporate level. The

Determine strap beam with suitable demonstration, Determine strap beam with...

Determine strap beam with suitable demonstration. Here observe that R e becomes greater than P e by a magnitude of V while R i becomes less than P i by a magnitude equal to

Illustrate the general shear failure in bearing capacity, Illustrate the ge...

Illustrate the general shear failure in bearing capacity. General Shear Failure: In this case of failure, contiguous failure surfaces develop between the edges of the footin

Stearing system, advantanges of a fixedbeam over ackermann

advantanges of a fixedbeam over ackermann

Show bolt material, Q. Show Bolt Material? Bolt material must be select...

Q. Show Bolt Material? Bolt material must be selected with adequate yield strength at the operating temperature to provide the required strength to properly seat the gasket. It

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