Calculations for force, Mechanical Engineering

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

Posted Date: 10/17/2012 5:07:52 AM | Location : United States







Related Discussions:- Calculations for force, Assignment Help, Ask Question on Calculations for force, Get Answer, Expert's Help, Calculations for force Discussions

Write discussion on Calculations for force
Your posts are moderated
Related Questions
Initial Graphics Exchange Specifications (IGES) The basic concept of IGES is concerned with the exchange of product description data from one CAD system to another one. The CAD

Scope of thermodynamics in thermal engineering Sol: Thermal engineering is a very important associate branch of mechanical, metallurgical, aerospace, chemical, marine, auto

application of optiz

V elocit y Ratio for Open Belt Drive: Figure Consider a simple belt drive (that is one driver and one follower) as shown in the figure given below Let D 1

Find out the centroid of the shaded : Find out the centroid of the shaded area shown in Figure Solution Net area of shaded portion of Figure = The area of full

Capacity Planning: This unit defined different ways to measure capacity, set up maximum capacity, and calculate capacity utilization. The long-term and short-term strategies t

Axis perpendicular to the vertical plane - tetrahedron: A tetrahedron of side 60 millimeter has its base parallel to the VP, along with an edge of the base inclined at 45 o t

what is clearance?what is the need of clearance?differences between with clearance and with out clearance?

EXPLANE PLZZ

Define the Ideal Surface Roughness The ideal surface roughness represents the best possible finish which may be obtained for a given tool shape and can only be approached if bu