Compute minimum value of the horizontal force, Mechanical Engineering

Assignment Help:

Compute minimum value of the horizontal force:

Block A of weight 520N rest on horizontal top of block B having weight of 700N as shown in the figure given below. Block A is tied to support C by cable at 300 horizontally. The coefficient of friction is 0.4 for all the contact surfaces. Compute minimum value of the horizontal force P only to move the block B. How much is the tension in cable then. 

353_Compute minimum value of the horizontal force.png

Sol.: Consider First free body diagram of block A

∑H = 0

µR1 = Tcos30°

0.4R1 = 0.866T

R1 = 2.165T                                                                                                                           ...(i)

∑V = 0

W = R1 + Tsin30°

520 = 2.165T + 0.5T

520 = 2.665T

T = 195.12N                                                                                                                       ...(ii)

Putting in equation (i) we get

R1 = 422.43N                                                                                                                      ...(iii)

Consider First free body diagram of block A

∑V = 0

R2 = R1  + WB

R2 = 422.43 + 700

R2 =1122.43N                                                                                                                     ...(iv)

∑H = 0

P = µR1 + µR2

P = 0.4(422.43 + 1122.43)

P = 617.9N                                                  .......ANS


Related Discussions:- Compute minimum value of the horizontal force

Materials, what is the meaning of 6061 and why its called as 6061?

what is the meaning of 6061 and why its called as 6061?

If o ring found to be leaking-oil seal is found be leak, If "o" ring is fou...

If "o" ring is found to be leaking or oil seal is found to be leaking check as mentioned: If "O" ring found to be leaking change "O" rings. If oil seal found to be leaking check o

MECHANICS, CLOSED CIOL HELICAL ,WIRE DAI 10MM AND COMLITE10 TURNS WITH MEAN...

CLOSED CIOL HELICAL ,WIRE DAI 10MM AND COMLITE10 TURNS WITH MEAN RADIOUS AND AXIAL LOAD 200N ,C=80KN/MM2.FIND DIFLECTION OF SPRING?

Design a pipeline and pump station to pump water, Design Problem:  Design a...

Design Problem:  Design a pipeline and pump station to pump 100 MGD of water to the Mississippi river.  To reduce the required horsepower of the pumps, the flow will be pressurized

Example of change of enthalpy, Example of change of enthalpy: Q 0.5...

Example of change of enthalpy: Q 0.5kg/s of a fluid flows in steady state process. The properties of fluid at the entrance are measured as p 1 = 1.4bar, density = 2.5k

A circumferential fin rectangular profile is constructed , A circumferentia...

A circumferential fin rectangular profile is constructed of Cu and surrounds a tube having a diameter of 1.25 cm.  The fin length is 6 mm and its thickness is 0.3 mm. The fin is ex

Geometrical modeling of curves, Geometric modeling is an integral part of a...

Geometric modeling is an integral part of any Computer-Aided-Design (CAD) system. A geometric model is defined as the complete representation of graphical and non-graphical informa

Use of trusses, Use of trusses: Where do you find trusses in use? ...

Use of trusses: Where do you find trusses in use? The main uses of truss are as follows: 1. The trusses are used to support slopping roofs. 2. Brick trusses are

Power sources for arc welding, POWER SOURCES FOR ARC WELDING Electric ...

POWER SOURCES FOR ARC WELDING Electric arc welding processes constitute a majority of all the welding processes. Most of the weldable materials can be joined by arc welding. D

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