Calculations for the force to move a block, Mechanical Engineering

Assignment Help:

Calculations for the force to move a block:

Two blocks A and B having weight 4KN and 2KN respectively are in equilibrium position as shown in the figure given below. Coefficient of friction for both the surfaces is same as 0.25, make calculations for the force P which is required to move the block A.

1424_Calculations for the force to move a block1.png

Sol.: Considering equilibrium of the block B. Resolving force along with the horizontal and vertical directions:

 

2306_Calculations for the force to move a block2.png

 

Tcos30° -µRb = 0;

Tcos30° = µRb                                     ...(i)

Rb + Tsin30° - Wb = 0;

Tsin30° = Wb - Rb               ...(ii)

By dividing equation (i) and (ii), We get

tan30° = (Wb  - Rb)/µRb

0.5773 = (2- Rb)/0.25Rb;

0.1443Rb = 2- Rb

Rb = 1.748N

Fb = µRb = 0.25 × 1.748 = 0.437N

Considering equilibrium of block A: Resolving forces along horizontal and vertical directions,

1925_Calculations for the force to move a block.png


Related Discussions:- Calculations for the force to move a block

Selection of elctrodes, Q. Describe the Selection of elctrodes? The sel...

Q. Describe the Selection of elctrodes? The selection of a proper electrode for electric arc welding is very important to obtain a sound welded joint of proper strength. The va

Lubrication, what are the necessity of lubrication ?

what are the necessity of lubrication ?

Calculate the cutting speed, Normal 0 false false false ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Capp for forming processes, CAPP for Forming Processes Sheet metal par...

CAPP for Forming Processes Sheet metal parts are produced from flat sheets on presses using special metal forming dies. Process planning for sheet metal parts involves complex

Illustrate with required expression for hammer blow, Illustrate with requir...

Illustrate with required expression for Hammer Blow, Variation of tractive force, and Swaying Couple.

Computer integrated manufacturing, the component of computer integrated man...

the component of computer integrated manufacturing with the diagram

Determine the percentage increase in power possible, An open belt connects ...

An open belt connects two flat pulleys. The pulley diameters are 300 mm and 450 mm and the corresponding angles of Cap are 160 o and 210 o . The smaller pulley runs at 200 r.p.

Define trunnion jig, Define Trunnion Jig These jigs are used for drilli...

Define Trunnion Jig These jigs are used for drilling holes on very large or odd. 1. Figure shows the shaped parts from different sides. Figure: Trunnion

Factor for selecting a digital encoder, What factors should be considered w...

What factors should be considered when selecting a digital encoder (line codes)? Briefly mention five of those factors. Use sketches and additional text to describe the following e

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