Recent content by Arka420

Pretty much OK. And is it OK to say,that after collision,second sphere acquires linear velocity v?

Homework Statement A solid sphere is rolling without slipping on rough ground with an angular velocity w and linear velocity v. It collides elastically with an another identical sphere at rest. Radius of each sphere is R and mass m. What is the linear velocity of the first sphere after it...

They are the gravitational potential energy terms. Seeing that the length of the chain is not given,we can say that (pi)R = half times the length (which is given in the question itself). The moment of inertia of the mass m about the center of the pulley? Am I doing something wrong?

Is the equation 2mgl = mgl + 1/2mv^2 + 1/2Iw^2 (I is the moment of inertia about the center of the pulley wheel,while w is the angular velocity) by any chance?

Hmm. Looks like all I have to do is conserve energy.

Homework Statement Figure shows a massless wheel of radius R on which at a point a mass m is fixed and a uniform chain of mass 2m is tied to it which passes over the rim of the wheel and half of its length is hanging on other side as shown in the figure. When a small clockwise jerk is given to...

Homework Statement A conducting sphere of radius a is surrounded by a neutral conducting shell of radius b (b > a).Connections are provided as shown in diagram. Initially, the sphere has a charge Q. The switch S1 is opened and then closed. The switch S2 is then opened and closed. Finally, the...

Good thinking,man. I was thinking of coupling the two 20 ohm resistors,but I didn't think of coupling the two 4 ohm resistors. You did both,which revealed that the setup is nothing more than a simple Wheatstone bridge (a balanced one),which led to an easy answer (one without decimal digits).

Current always takes the easiest path. Why would it be so keen to retrace its path and encounter a few extra resistances in the process?

Homework Statement Find the equivalent resistance between A and B. All resistances shown are in ohm. Homework Equations The formulas for parallel and series connections. The Attempt at a Solution I have attempted to redraw the circuit and my redrawn diagram looks like this. I don't think...

This is how I worked out the circuit. Is it correct?

Homework Statement : [/B]Given the circuit diagram, find the equivalent resistance between points P and Q. Homework Equations : [/B]ΔVloop = 0, ΔIjunction = 0 and V = IRThe Attempt at a Solution : [/B]Eliminating the wires with no resistors and solving for resistance gives me the answer as...

Yes,that was my idea. We can break P as F X A,which gives Vrg (r is the density,I'm not taking d as the density as it will be used to denote the differential height,as you said),which on further reduction gives Ahrg. I'm only having trouble finding A(or the area). If we assume the differential...

Nope,pressure isn't the same at all depths. As depth increases,so does pressure.

Pressure depends upon the height from the free surface of the liquid h,the density of the liquid d and the acceleration due to gravity g.