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!
Average force of resistance:
A gun weighing 500 kN is utilized to fire a shell weighing 10 kN in a horizontal direction with a velocity of 500 metres/sec. With what initial velocity the gun shall recoil? What shall be the average force of resistance to bring it to rest in a distance of 1.25 metres?
Solution
Considering gravitational acceleration = 10 m/sec2.
Mass of shell = 10 × 103 /10
= 1000 kg
Mass of gun = 500 × 103 /10
= 50 × 103 kg or 50 tonne.
By applying the principle of conservation of momentum,
1 × 500 + 50 × V = 0
∴ V = - 10 metres / sec.
Negative sign of the velocity of gun mentions that the direction of velocity of the gun is opposite to that of the shell. This is for this reason, that motion of gun is called as recoil.
Consider F be the average retarding force causing retardation (- a) of the gun. As final velocity of gun is zero, through equation
V 2 = u 2 + 2 a s
we have
∴ 0 = 102 + 2 a × 1.25
∴ a = - 100 / (1.25 × 2)
= - 40 metres / sec2
∴ Retarding Force, F = m × a
= 50 × 40 = 2000 kN.
How we could build the working model of hartnell governor?
Determine the springs needed to absorb the energy: A vehicle weighing 28 kN and running at 2.5 m/sec is to be brought to rest by a buffer springs. Determine the number of spri
Ancillary Railway Structures: Overhead Transmission Lines When the line is electrified, the electric loco has to pick up the electric current from a cable that runs
Define the Ideal Surface Roughness The ideal surface roughness represents the best possible finish which may be obtained for a given tool shape and can only be approached if bu
Q. Effect on the corrosion rate of carbon steel? The velocity of the acid has a significant effect on the corrosion rate of carbon steel. The recommended velocity range for pi
can you teach me
Q. Show the corrosion mechanisms? The following corrosion mechanisms are likely to happen in the Oil Treating Unit: Under Deposit Corrosion and MIC Since cooling e
Q. Can you explain about Fuel Oil and Dextrin? Fuel Oil : It improves the mould ability of sand. Iron Oxide: It develops hot strength. Dextrin: It increases air sett
Consider the power system as designed below. The duty fluid is water, and has a mass flow 0.75 kg/ s and all piping through which the liquid flows has diameter 1'', while the steam
part print analysis
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