Evaluate the angle - block impends down the plane, Mechanical Engineering

Evaluate the angle - block impends down the plane:

What should be value of the angle shown in the figure so that the motion of the 90N block impends down the plane? The coefficient of friction for entire surface = 1/3.

1329_Evaluate the angle - block impends down the plane.png

Sol.: Consider equilibrium of block 30N             

∑V = 0;                                                                      1403_Evaluate the angle - block impends down the plane1.png

R1  - 30cos θ  = 0,

R1 = 30cos                                 ...(i)

∑H = 0;

T - µR1 - 30sinθ   = 0,

T = 10cos θ  + 30sinθ           ...(ii)

Consider the equilibrium of block 90N

∑V = 0;

R2  - R1  - 90cos θ  = 0

R2 = 120cos                             ...(iii)

∑H = 0;

90sin θ  - µR1 - µR2 = 0,

90sin θ  = 10cos θ  + 40sinθ         ...(vi)

tanθ = 5/9 that is  θ = 29.050

 

Posted Date: 10/18/2012 2:24:50 AM | Location : United States







Related Discussions:- Evaluate the angle - block impends down the plane, Assignment Help, Ask Question on Evaluate the angle - block impends down the plane, Get Answer, Expert's Help, Evaluate the angle - block impends down the plane Discussions

Write discussion on Evaluate the angle - block impends down the plane
Your posts are moderated
Related Questions

how to make ? what are the components needed ?

(a) What is the importance of safety at workshop? (b) What problems may arise, if we do not take safety precautions in the workshop?

A frame PQRSTU is hinged to a rigid support at P and is simply supported at T. It is loaded as indicated in the figure below. Determine the magnitude and nature of the force in the

SPOT WELDING In this type of welding, after proper cleaning of the surfaces, the metals to be welded are kept one above the other and two copper electrodes are kept on both sid

Computer systems to plan manage, and control the operations of a manufacturing plant through either direct or indirect computer interface with the plants production resource

Cranes are used to move materials vertically and laterally in ain area of limited length. They may he operated hydraulically pneumatically or electrically the important ty

advantages and disadvantages of kanban

Three forces act on particle: Thr ee forces act on particle ' O ' as shown in the figure given below. Determine the value of ' P ' such that resultant of these three forces

Find the minimum weight to keep equilibrium: A belt supports the two weights W 1 an d W 2 over a pulley as shown in the figure given below. If W 1 = 1000N, fi