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!
Q. Hoop, Disk, Cylinder and Sphere
A disk, a hoop a cylinder and a sphere have the same mass and the same diameter. Every is rolled toward a ramp with the same initial velocity. Which one will arrive at a higher point on the ramp?
This problem merely involves the conversion of kinetic energy to potential energy. The total kinetic energy when every object is released consists of its forward kinetic energy and its rotational kinetic energy. Thus, for each object
P.E. = K.E. =1/2(mv2) +1/2(Iω2)
Where I be the rotational inertia
The forward kinetic energy for every object is the same except the rotational kinetic energy depends on the distribution of mass around the centre.
The following table illustrate the values of I and KER for several simple shapes.
Shape
Inertia
KER
hoop
mr2
mv2/2
hollow cylinder
disk
mr2/2
mv2/4
solid cylinder
hollow sphere
2mr2/3
mv2/3
solid sphere
2mr2/5
mv2/5
A little thought contras that I be the same for a hoop and hollow cylinder having equal masses and diameters. Likewise I be the same for a disk and solid cylinder.
Obviously the object with the largest rotational inertia will reach the greatest height on the ramp. Specified the values for I from the table the hoop will reach the highest point.
Q. Why nichrome is used as heating element in electric heating devices? Nichrome, an alloy of nickel as well as chromium is used as the heating element for the following reaso
Determine the working of N- Channel JFET In N-channel JFET, two p regions are connected with each other (internally or externally) and are called gate (G). Ohmic contacts are
Mercury is poured into a U-tube as shown in Figure given below. 100g of water is then poured into the right hand side of the tube. The density of mercury is 13.6g/cm 3 . What heigh
explain the process of power generation and transmission?.
Which of the following particles has more electrons than neutrons: (1) C (2) F- (3)O -2 (4)Al +3 Ans: O -2
E lectrons have very much smaller mass than that of ions, so they respond more rapidly to a changing electric field. For electric field that oscillates at extremely high frequencie
Describe the construction and working of carbon dioxide laser. Construction and Working: The most fundamental form of a CO 2 laser comprise a gas discharge (along with a mi
Illustrate about laser beam welding in short. Laser beam welding: Laser beam welding (LBW) is a welding technique utilized to join multiple pieces of metal by the use of a l
These are non-metallic compounds consisting of ferric oxide and one or two bivalent metal oxides such as NiO, MnO. These have resistivity of the order of 10 9 O cm, which reduces e
The P.D. at the feeder end of a two wire d.c. distributor is 600 volts. Two loads are connected to the distributor at distances of 600 feet and 1000 feet from the feeder end and t
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