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

Show geographic constraints of the plant, Q. Show Geographic constraints of...

Q. Show Geographic constraints of the plant? The layout of process units will be influenced by the geographic constraints of the site. Spacing is required between plant facilit

Determine the edge table, Determine the Edge Table Each entry in the ed...

Determine the Edge Table Each entry in the edge table contains those information mentioned earlier, edge name, start vertex and end vertex, left face and right face, the predec

How can you implement chemically coated sand, Q. How can you implement chem...

Q. How can you implement chemically coated sand? Chemically coated sand : Clean silica grains are sometimes coated with a non thermosetting hydrocarbon resin, which acts as a

Design of a filament winding machine, How can I achieve a back and forth mo...

How can I achieve a back and forth movement of carriage system. How can I reverse the motor to go back and forth.

calculate the maximum power , The transmission output shaft for a heavy go...

The transmission output shaft for a heavy goods vehicle can withstand a safe working shear stress of 54MPa. Its outside diameter is 54mm and its internal diameter is 48mm. Calculat

Mechanical material requisition, The Mechanical Engineer/Specialist shall p...

The Mechanical Engineer/Specialist shall prepare Material Requisitions for all required mechanical material and equipment. The format for all requisitions shall be in accordance w

Home home, why 4R kinematic chain do not form different mechanisms?

why 4R kinematic chain do not form different mechanisms?

Compound pendulum, Initial difference in radii at the junction of a compoun...

Initial difference in radii at the junction of a compound cylinder

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