Determine least value of work, Mechanical Engineering

Assignment Help:

Determine least value of work:

Q. Determine least value of W as shown in the figure given below to keep the system of connected bodies in equilibrium µ for surface of contact between plane AC and block = 0.28 and that between the plane BC and block = 0.02

1161_Determine least value of work.png

Sol.: For least value W, motion of 2000N block must be impending downward.

From the free body diagram of block 2000N as shown in the figure

∑V = 0

R1  - 2000cos30° = 0

R1 = 1732.06N                                                                                                           ...(i)

∑H = 0

T + µ1R1 - 2000sin30° = 0

T = 2000sin30° - 0.20 × 1732.06, T = 653.6N                                             ...(ii)

Now Consider the free body diagram of WN block, as shown in the figure

∑V = 0

R2 = Wcos60° = 0

R2 = 0.5W N                                                                                                            ...(iii)

∑H = 0

T - µ2R2 - Wsin60° = 0

653.6 = Wsin60° - 0.28 × 0.5W

WLEAST = 649.7N                                                                        .......ANS


Related Discussions:- Determine least value of work

Calculate the angular acceleration of the wheel, Calculate the angular acce...

Calculate the angular acceleration of the wheel: A locomotive wheel of radius r = 0.8 m is illustrated in Figure. At the given instant, the speed of the locomotive is 1.6 m/se

Bending stress in curved beams, aframe of punching machine and its varios d...

aframe of punching machine and its varios dimentions. if it has force of85kN determine others

How can you test hardness of the prepared mould, Q. How can you test hardne...

Q. How can you test hardness of the prepared mould? Hardness test: The hardness of the prepared mould surface is tested to check the ramming density of the sand. The instrume

Spanners tool and equipment , Spanners: These are used to tighten and loos...

Spanners: These are used to tighten and loosen nuts and bolts. These are made according to standard nut and bolt sizes and in vanadium steels. The following types of spanner are u

Example of shear force and bending moment diagram, Example of Shear force a...

Example of Shear force and bending moment diagram: Q: Draw the Shear Force and bending moment diagram for the simply supported beam loaded as shown in the figure given belo

OPITZ alternative, I am looking for an alternative coding system to the OP...

I am looking for an alternative coding system to the OPITZ coding system for my essay thanks

Michelson interferomete, how it is use to determine the wavelenth of He-Ne ...

how it is use to determine the wavelenth of He-Ne laser?

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

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

Theorem of perpendicular axis, Theore m of perpendicular axis It state...

Theore m of perpendicular axis It states that if I X X and I Y Y   be the M.I. of plane section about the two mutually perpendicular axes meeting at a point. Th

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