Koustubh Jain
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Feeling heavy in an upward accelerating elevator - is it a pseudo force?
1 votes

Let's take a look at the elevator and the person standing on it from an inertial frame of reference, the ground frame. Now, If you draw the free body diagram for the person in the elevator (which is ...

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Discrepancy between two methods two solve problems of rotational mechanics
1 votes

but I cannot do the same problem about any random point by applying the first equation that I mentioned ,why is this happening ? Because $\displaystyle{\vec{\tau} =\frac{d\vec{L}}{dt} = \frac{d(I\vec{...

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Charge as a function of time in an RC circuit
1 votes

As far as I know in an RC circuit i.e. one consisting of both resistors and capacitors. The charge in the capacitor can be expressed as a function of time as : $$\displaystyle{q(t) =CV(1-e^{\frac{-t}{\...

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Is direction of angular velocity just a definition or has a physical significance?
1 votes

First lets be on the same page regarding what is angular velocity ? Angular velocity often, denoted as $\omega$ is the rate of angular displacement, denoted as $\theta$ with respect to time i.e. you ...

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Can anyone help me in these questions (related to Work Done)
1 votes

Can work done by Kinetic Friction on an object be positive? Zero? Yes it can be either positive or negative or zero for an object. But always negative for a system. Can Static Friction do Non-zero ...

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Can someone please explain the work of a resistor?
0 votes

It doesn't really do anything...when you show a resistor in a circuit you are actually representing the resistance to the flow of current of your load i.e. some device that would be connected like say ...

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Why do the two balls come down at the same time?
0 votes

why the two pendulums released from different angles have the same time period ? The time period for a simple pendulum is independent of its initial conditions. $$T = 2\pi\sqrt{\frac{l}{g}}$$ where $...

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How to plot graph of acceleration in this case?
0 votes

@Semoi's graph is correct for plotting velocity versus time. Acceleration is the change in velocity. Many a times like when in uniform circular motion the speed remains constant but due to the change ...

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Kinetic energy in circular motion
0 votes

Suppose i have a point mass which is moving in a circular path Let the mass of the particle be $m$ If we see this particle from a frame of reference located not at the centre of the circle but say ...

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Classic Man on a Boat problem
Accepted answer
0 votes

Well, before the man started moving, lets find the location of the Centre of mass of our system consisting of the man and the boat. Let us assume the man to be the origin. The centre of mass of the ...

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Excess pressure inside a drop
-1 votes

Its because a liquid drop has just a single surface, its inside is filled with water whereas a soap bubble has an air-soap interface(in other words surface) on the outside and another one in the ...

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