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

Determine the concurrent forces, Determine the concurrent forces: Four...

Determine the concurrent forces: Four coplanar concurrent forces act at point and keep it at rest. These are mention in Figure. Determine the forces P and Q. Solution

Copper and its production, Copper And Its Production Copper is marked ...

Copper And Its Production Copper is marked via a host of good engineering properties. The foremost is copper's good electrical conductivity and bulk of copper is utilized as e

Composites , For an automotive component of your choice that is traditional...

For an automotive component of your choice that is traditionally metallic, review how it could be re-engineered as a composite? How factors such as fibre & matrix type, fibre volum

Kkleins constraction, What is the limition of kkleins constraction?

What is the limition of kkleins constraction?

Parallelograular law of forces and triangular of forces, two forces are act...

two forces are acting at a point''o'',determine magnitude and direction by using parallelogram law of forces and triangular law of forces

Find out nature of position vector, Find out nature of position vector: ...

Find out nature of position vector: The position vector of a specific at any instant t with respect to the axes x, y and z is specified by r (t ) = (4 t 2   + 5) i¯ + (3 t

What do you mean by line designation tables, Q. What do you mean by Line De...

Q. What do you mean by Line Designation Tables? Development of the Line Designation Tables (LDT's) is carried out in conjunction with the evolution of the P&ID's. Engineering

Tg curves of caco3, how much of mass lost in between 600-900 c

how much of mass lost in between 600-900 c

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