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!
Find the coefficient of friction between ladder and floor:
A ladder of 5m long rests on horizontal ground and leans against smooth vertical wall at an angle of 70° with the horizontal. The weight of ladder is 900N and acts at middle. The ladder is at point of sliding, when the man weighing 750N stands 1.5m from the bottom of ladder. Calculate the coefficient of friction between ladder and floor.
Sol.: Forces acting on ladder is shown in the figure
By resolving all the forces vertically,
RV = R - 900 - 750 = 0
R = 1650N ...(i)
Taking moment about the point B,
R × 5sin20° - Fr × 5cos20° - 900 × 2.5sin20° - 750 × 3.5sin20° = 0
As Fr = µR, and R = 1650N; Fr = 1650µ
Putting, value of R and Fr
µ = 0.127 .......ANS
A child is twirling a 0.0106 kg ball on a string in a horizontal circle whose radius is 0.096 m. The ball travels once around the circle in 0.540 s. (a) Determine the centripeta
Explain Degree of Freedom - Jig and Fixture The complete location of components inside a jig or fixtures can be understood with the help of figure. The work piece is a
Resistor: The wire that opposes (resists) the flow of current through it by virtue of its property is called resistor. This property is known as resistance. The resistance is
Di fferentiate between strength of material and engineering mechanics Sol.: Three primary areas of mechanics of solids are statics, dynamics and the strength of materials.
how to design a steel connecting rod using minimum weight and thickness?
Commutator The function of a commutator is to change alternating current induced in the armature into unidirectional current. The commutator is of cylindrical shape and is made
How kleins construction method is different from other type of graphical method
With the help of a neat diagram illustrate the working of Gasifier combined cycle power plant. Describe with the help of neat diagram the working of Pressurised water reactor nu
Carburettor Cleaning: Carburettor needs to be cleaned otherwise the jets may get clogged which may supply an inadequate amount of air fuel mixture. Inadequate amount of air fuel
how I can formulate mathematically the risk management in demand uncertainty of short life cycle product.
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: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd