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September 10, 2017
Masses Connected by a Spring

Two equal masses are connected by a spring satisfying Hooke's law. The spring is elongated a little and allowed to let go.. Let the angular frequency of oscillations be \(\omega\). Now one mass stopped. What is the square of the new frequency? Discussion: $$ \mu=\frac{m}{2}$$ $$ \omega^2=k/\mu=2k/m$$ When one block is stopped $$ \omega_1^2=k/m=\omega^2/2$$ Useful […]

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September 10, 2017
TIFR 2013 Problem 32 Solution - Limit of a Sequence

TIFR 2013 Problem 32 Solution has been written for TIFR entrance preparation series. A problem on limit of a sequence from real analysis.

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September 8, 2017
TIFR 2013 problem 31 | Inequality problem

Let's discuss a problem from TIFR 2013 Problem 31 based on inequality. Try this problem yourself, then read the solution.

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September 8, 2017
Stable Equilibrium Point

Let's discuss a problem where we find the stable equilibrium point, useful for Physics Olympiad. Try it yourself before reading the solution.

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September 6, 2017
TIFR 2013 Problem 30 Solution -Infinite set of independent vectors taken 3 at a time

TIFR 2013 Problem 30 Solution has been written for TIFR entrance series. A problem using the idea of linear independence of vectors from Linear Algebra.

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September 4, 2017
TIFR 2013 Problem 29 Solution -Continuity of function defined on rationals and irrationals

TIFR 2013 Problem 29 Solution has been written for TIFR entrance preparation series. A problem on sequence criterion for continuity from Real analysis.

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September 4, 2017
Centre of Mass

Let's find out the centre of mass for carbon monoxide, useful for the Olympiad. Try it yourself before reading the solution.

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September 3, 2017
Loop-The-Loop

Let's discuss an interesting problem - Loop-The-Loop, useful for Physics Olympiad. Try it yourself before reading the solution.

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August 31, 2017
Total Charge on a Circular Disc

Let's discuss a problem where we will find out the total charge on a circular disc. The Problem: Consider a circular disc of radius (a) whose surface density of charge at any point ((r,\theta)) is $$ \sigma(r,\theta)=\sigma_0r^2sin^2\theta$$ Find the total charge on the disc. Solution: Consider a surface element (rdrd\theta) on the disc about the […]

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August 30, 2017
TIFR 2013 Problem 28 Solution -Bijective continuous non-homeomorphism

TIFR 2013 Problem 28 Solution written for TIFR entrance preparation series. A problem on inverse of a continuous map from real analysis

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