Que1.Consider two balls of identical mass. If ball 1 is moving to the right towards stationary ball 2 at 1.0 m/s and the two balls collide elastically, what will the final velocities of both balls be? (Hint: consider this simulation.)
Que 2.If the same two balls again undergo a collision, but this time the collision is inelastic, what will the final velocities of both balls be?
Que 3.What are the conditions for elastic and inelastic collisions?
Que 4.Explain how the acceleration of an object can be equal to gravitational acceleration.
In: Mechanical Engineering
Problem 1: A 5.2-liter, spark-ignition, four-stroke cycle, V6 automobile engine operates at 2400 RPM with ? = 1.5. The engine has a volumetric efficiency of 89%, with bore as B = 2.1 S. The density of air at room temperature is 1.18 kg/m3.
Lamda = 1.5
Calculate:
In: Mechanical Engineering
Angular work is positive during eccentric muscle contraction and
negative during concentric
muscle contraction. With the aid of sketches, explain the reason
for work to be positive and
negative for eccentric and concentric muscle actions,
respectively.
In: Mechanical Engineering
To find a positive root for , write a MATLAB script file that uses Bisection method. Choose any initial value that is needed. Use absolute relative approximate error to be less than 0.01. Your code should report the number of iteration and the value of x.
In: Mechanical Engineering
Write a MATLAB script file to integrate using trapezoid method (do not use trapz command for this part, write your own script). Consider x=-0.5 to 3 with Δt=0.01, and compare your result with using “integral” and "trapz" commands (all in one file).
In: Mechanical Engineering
A power plant operates on a regenerative vapor power cycle with
one open feedwater heater. Steam enters the first
turbine stage at 12 MPa, 520◦C and expands to 1 MPa, where some of
the steam is extracted and diverted to the open
feedwater heater at 1 MPa. The remaining steam expands through the
second turbine stage to the condenser pressure of
6 kPa. Saturated liquid exits the open feedwater heater at 1 MPa.
For isentropic processes in the turbines and pumps,
determine for the cycle.
a) The thermal efficiency.
b) The net power developed, in MW, for a mass flow rate of 106 kg/h
into the first-stage turbine.
In: Mechanical Engineering
Steam at 32 MPa, 520◦C leaves the steam generator of an ideal Rankine cycle modified to include three turbine
stages with reheat between the stages. The reheat pressures are
4 and 0.5 MPa, respectively, and steam enters the second-
stage turbine at 440◦C and the third-stage turbine at 360◦C. The
condenser pressure is 0.08 bar. Determine for the cycle
a) The net work per unit mass of steam flowing, in kJ/kg.
b) The thermal efficiency.
In: Mechanical Engineering
In: Mechanical Engineering
Analyze the different types of defects that can be developed in plastic injection moulding processes. Your analysis must include the defects explanation, causes of the defects and the remedy of reducing the defects
In: Mechanical Engineering
A SMC is being used to mold the outer panel of an automobile hood. The inner panel of the hood will be made from a thin-gage steel. Write three concerns you may have for using SMC in this application. Suggest a method of improving the stiffness of the outer panel without increasing its weight and discuss a molding defect that may be associated with this method.
In: Mechanical Engineering
An object is initially traveling at a velocity of 12 m/s. It then begins to change it’s velocity according to the function ?=2.5?+3? v = 2 . 5 s + 3 a , where v is the velocity of the object, s is the objects position, and a is the acceleration. Determine the velocity of the object 30 meters after the velocity begins to change. (17.5 m/s)
In: Mechanical Engineering
In: Mechanical Engineering
The propane is contained in a piston-cylinder assembly, which maintains constant pressure at 0.2 MPa. If a mixture with a quality of 0.65 and a total volume of 0.07 m3 is slowly heated to a temperature of 54°C, a) what was the total work into the system b) what was the total amount of heat added to the system.
Please explain what tables you use to find the answer.
In: Mechanical Engineering
In: Mechanical Engineering
my topic is "mudguard fender of motorbike"
this is the product i seleted.
so i want " Cost estimation " for mudguard fender of motorbike
In: Mechanical Engineering