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.
what is mimnimum data for modelling a unique carnot cycle
give me the solutions for higher engineering mathematics by bs grewal
Q. Horizontal Vessels and Vertical Vessels? Horizontal Vessels A horizontal vessel, designed to support a full weight load of water, shall be tested while resting on its sup
For the beam shown below, we need to determine: (i) the support reactions R L and R R (ii) the shear force and bending moment diagrams (iii) the maximum stress in the b
(a) Describe the volumetric efficiency for an I. C. Engine. What is the basic effect of volumetric efficiency on: (i) Specific fuel consumption, (ii) engine power. (b) A p
Find out the strain energy stored: A close coiled spring is subjected into an axial moment of 16 N-m. If the spring contains 15 coils with wire diameter of 10 mm and mean coil
What are the rules which must be kept in mind when designing castings? Some of the points which should be kept in mind during the process of cast designing are as follows: >
how to solve t -section with udl
Q. Can you explain Investment casting? -Investment casting produces very high surface quality and dimensional accuracy. -Investment casting is commonly used for precision eq
The cross-section of two angles attached together are shown on the left below. The properties of angles are given in the table with reference to the diagram on the right. The ma
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