Actually,the question was of an objective type,and the options involved only the sign of charge.Here are the four options given:
a.possible only if q3 is positive
b.possible only if q3 is negative
c.possible irrespective of sign of q3
d.not possible at all
So is the correct option c...
Homework Statement
Two point charges + q1 and + q2 are fixed with a finite distance d between them.It is desired to put a third charge q3 in between these two charges on the line joining them so that the charge q3 is in equilibrium.What has to be the charge on q3 to make this possible/...
Homework Statement
A combination of two thin convex lenses of equal focal lengths,is kept separated along the optic axes by a distance of 20 cm between them.The combination behaves as a lens system of infinite focal length.If an object is kept at 10 cm from the first lens,its image...
Homework Statement
A wheel of radius R rolls along the ground with velocity V.
A pebble is carefully released on top of the wheel so that it is instantaneously at rest on the wheel.
(a) Show that the pebble will immediately fly off the wheel if V> sqrt(Rg)
(b) Show that in the case where V<...
Not Tipler.
All I've done is collect the links to PDF files,from the course websites of various universities.Yes,they contain full solutions to most problems.
Here is how I did the first part:
First find the total moment of inertia around an axis passing through the pivot.That would be 1/3 ml^2+1/2MR^2+Ml^2
The centre of mass of the system can be found,which is
C=(ml/2+Ml)/(m+M)
The component of the weight tangential to motion is (M+m)g...
Homework Statement
Find the period of a pendulum consisting of a disk of mass M and radius R fixed to the end of a rod of length l and mass m.How does the period change if the disk is mounted to the rod by a frictionless bearing so that it is perfectly free to spin?
Homework Equations...
Thanks.
But what if I try to resolve the forces along the "upright" x and y axes,i.e,I get
N cos(theta)=mg+mv^2/R cos(theta)
and
N sin(theta)= mv^2/R sin(theta) and the energy equation.
Now,how do I find the theta at which N becomes zero(which is when it loses contact,right?)
Homework Statement
A small block slides from rest from the top of a frictionless sphere of radius R.How far below the top,x,does it lose contact with the sphere?(Sphere doesn't move)
The Attempt at a Solution
The angle subtended by the block at the centre of the sphere can be taken...
I know this is a bit embarrassing for me,but how d'you integrate
(a^2/z- 3z)dxdy .After having substituted for z,and converted to polar co-ordinates,I get zero in the denominator!
This is the expression:
[double integral]a^2/(sqrt(a^2-x^2-y^2)) dx dy.
For conversion to polar co-ords,if I...
Homework Statement
Evaluate [double integral]f.n ds where f=xi+yj-2zk and S is the surface of the sphere x^2+y^2+z^2=a^2 above x-y plane.
The Attempt at a Solution
I know that the sphere's orthogonal projection has to be taken on the x-y plane,but I'm having trouble with the...
Problem : Evaluate [double integral]f.n ds where f=xi+yj-2zk and S is the surface of the sphere x^2+y^2+z^2=a^2 above x-y plane.
My effort:: I know that the sphere's orthogonal projection has to be taken on the x-y plane,but I'm having trouble with the integration.Please help!
Here is how I thought of doing it.
Use impulse=change in momentum
for successive bounces and add them all up(infinite series).Assume the force F to be a constant,so that it can be taken out of the integral sign.To find force F,use
work=change in kinetic energy.
The distance traveled by the...
A ball drops to the floor and bounces,eventually coming to rest.Collisions between the ball and floor are elastic;the speed after each collision is e times the speed before collision where e<1.If speed just before 1st bounce is v,find the time taken to come to rest.
Homework Statement
An air bubble of radius 2mm if formed at the bottom of a 3.3m deep river.Calculate radius of bubble as it comes to the surface.
atmospheric pressure=10^5 pa and density of water=1000 kg/m^3
A mass M whirls around on a string which passes through a ring .Neglect gravity.Initially the mass is distance Ro from the center and is revolving at angular velocity Wo.The string is pulled with constant velocity V starting at t=0 so that the radial distance to the mass decreases.Draw a force...
I am a high school physics student.I have a textbook on mechanics by Kleppner and Kolenkow.it's a great book with just one problem.all the exercise problems haven't been provided with an answer .so,it's maddening because i can't know whether my answer is correct.does this book have a solutions book?
I read recently about an analogy to how general relativity tries to picture gravity.
Its the one about a rubber sheet and a heavy sphere placed on it deforming it to cause a depression.Another ball in the region will tend to move towards this depression .But doesn't this assume the existence of...
Does a particle annihilate only with its corresponding antiparticle,or with any anti particle?Also,as a photon is its own antiparticle,when one photon collides with another, they should annihilate,shouldn't they?