Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Determine force on a body to pull or push:
Q: A wooden block having weight of 50N rests on the horizontal plane. Determine force required which is acted at an angle of 15° to just (a) Pull it, and (b) Push it. Take the coefficient friction = 0.4 between the mating surfaces. Also comment on the result.
Sol.: Let P1 be the force needed to just pull the block. In limiting equilibrium, forces are balanced. That gives
∑H = 0; F = P1cosθ
∑V = 0; R = W - P1sinθ
Also F = µR
µ(W - P1 sinθ) = P1cosθ
or P1 = µW / (cosθ + µsinθ)
= 0.4 × 50 /( cos 15° + 0.4 sinl5°)
= 18.70N .......Ans
(b) Let P2 be the force which is required to just push the block. With reference to free body diagram
Let us write equations of equilibrium,
∑H = 0; F = P2cosθ
∑V = 0; R = W + P2Sinθ
µ (W + P2sin θ ) = P2 cosθ
or P2 = µW / (cosθ - µsinθ)
= 0.4 × 50 /( cos 15° - 0.4 sinl5°)
= 23.17N .......Ans
Comments. It is easier to pull the given block than push it.
Distribution of shearing stresses on l--sections and miscellaneous sections
A city owns and operates a garage in which maintenance and repair work is performed on city-owned vehicles. Included among these vehicles are motor-pool cars, heavy-duty trucks, an
Q. Show Experimental Verification of time Dilation ? Time dilation is a real effect, it can be verified by making this experiment. (Are created at high attitudes in the earth a
identify the four type of bulk defect
Q. How can we use of Shrinkage allowance? Since metal shrinks on solidification and contracts further on cooling to room temperature, linear dimensions of the pattern is increa
The aim of this assignment is for the student to use the information, data and analysis techniques presented during lectures to design a belt drive transmission for a ventilation f
Theory of Constraints: Goldratt's theory of constraint has attracted the attention of several practioners in the industry. His concept of goal, constraint, and throughput, cri
what is the difference betwen proof stress and rupture stress?
Explain Internal Broaching - Types of Broaching Internal broaching operation is adopted for producing internal surface such as holes, keyways and teeth of an internal gear for
Information Dissemination The purpose of record keeping is best served if information is timely disseminated. The employees are required to be informed on all health issues co
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd