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

Average force of resistance, Average force of resistance: A gun weighi...

Average force of resistance: A gun weighing 500 kN is utilized to fire a shell weighing 10 kN in a horizontal direction with a velocity of 500 metres/sec. With what initial ve

Welding, what is the average speed of travel in gas tungsten arc welding

what is the average speed of travel in gas tungsten arc welding

Explain the conventional frame, Show schematic diagram showing the layout o...

Show schematic diagram showing the layout of transmission system of four-wheel driven car. Explain briefly the following types of frame: (a) Conventional frame (b) Integra

Explain the hydrostatic pressure, Explain the Hydrostatic Pressure Hydr...

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

welding, types of welding, pressure and non pressure weldin

types of welding, pressure and non pressure welding

Velocity acquired by block - system released from rest, Velocity acquired b...

Velocity acquired by block - system released from rest: T wo blocks shown in the figure given below, have masses A = 20N and B = 10N and the coefficient of friction between

What do you mean by forging, With the help of neat diagrams show various ro...

With the help of neat diagrams show various roll arrangement used in rolling mills. What do you mean by forging? With the help of a diagram differentiate between press forging and

Evaluate the work done by the gas during the expansion, (a) What do you und...

(a) What do you understand by the following : (i) Open System (ii) Closed System (iii) Concept of ‘Work' (b) 0.014 m 3 gas at a pressure of 2070 KPa expends to a pressure of

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