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.
what is MIPLAN system
Q. Define Zirconium and its alloys? Zirconium and its alloys were developed primarily for the nuclear industry, but have found many industrial corrosion-resistant applications
What is the sequence of this problem Job- 1 2 3 4 5 6 7 M/c M1 4 13 16 7 11 12 10 M2 9 11 11 7 13 2 4
With the assistance of the airplane information and the Dutch roll approximation values shown in Table Q3: Table Q3 (a) Determine the Dutch roll eigenvalues. (b) Dete
Determine the economic order quantity: Determine the economic order quantity and the reorder point. Given Annual demand (D) = 2,000 units Average daily demand (d) = 2,00
Classification Based on Type of Welding Fusion welding : These processes involve fusion of the base metal to complete the weld. Fusion welds generally do not require thea
Battery Charger: As suggested by the name, it is used to charge a battery. The detailed procedure for charging a battery is given in later units. List the uses of following too
Determine the Excavation of soil Excavation of soil in open well foundations is done by dredging with grab buckets or similar equipment. The volume of excavated soil always e
(a) Illustrate why a rich mixture is required for the following (i) idling (ii) sudden acceleration (iii) Maximum power (b) A simple jet carburetor is required to supply 5Kg
Deflection at the centre - maximum deflection: A simply supported beam of span 6 m is subjected to Udl of 24 kN/m for a length of 2 m from left support. Discover the deflectio
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