Recent content by judas_priest

Also, do Induced emf actually create current flowing in the opposite direction of the current that is causing the magnetic field? (Not the the induced magnetic field)

If the induced emf = -d(phi)/dt that is the rate at which the flux through a body is increasing, can the induced current ever be more than the actual current so as to oppose the field created? Because the rate at which the flux through a body is increasing can be greater than the flux it...

This case being the question I posted to start the thread. Moment of inertia gives a general idea of the distribution of mass. Given by I = M*R^2

How do I find the moment of inertias in this case? Which is greater than which?

Let me reframe my question - How do I find the the moment of inertia of the rod perpendicular to the axis asked to find about

How do I find the perpendicular Moment of inertia?

In that case A=D. Correct?

A has the largest and C the smallest? Only using intuition and a little physics. Please correct if I'm wrong.

Homework Statement Four T-shaped objects are constructed by connecting two identical rods of equal mass and equal length. Rank in order, from LARGEST to SMALLEST, the moments of inertia for rotation about the axis indicated by the dashed line. Homework Equations The Attempt at a...

Homework Statement You stand at the end of a long board of length L. The board rests on a frictionless frozen surface of a pond. You want to jump to the opposite end of the board. What is the minimum take-off speed v measured with respect to the pond that would allow you to accomplish that...

Yup, that was my thought. Wanted to get it cleared. Thanks!

Homework Statement How is change in momentum related to mass? Will the change in momentum for a mass of 4m being pushed with constant force be same as the change in momentum for a mass of m being pushed with same force?Homework Equations The Attempt at a Solution I know Change of momentum (i.e...

Homework Statement A rocket ship parked at rest in space suddenly explodes into 3 pieces of equal mass traveling in the directions shown. If the piece traveling upward has a speed of 150 m/s, what are the speeds of the other two pieces?Homework Equations The Attempt at a Solution How do I...

I too did it that way. But the answer needs a 'h'. Like the question says.

Homework Statement A ball is kicked horizontally with speed v1 from the top of a building of height h. A small cart is moving towards the building with a constant speed v2. Right at the instant when the ball is kicked, the cart is at a distance d from the building. What is the distance d so...