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Physics-

General

Easy

Question

A vector of magnitude b is rotated through angle $theta$ What is the change in magnitude of the vector?

$2 b s i n \frac{θ}{2}$
$2 b c o s \frac{θ}{2}$
$2 b s i n θ$
$2 b c o s θ$

The correct answer is: $2 b blank s i n invisible function application fraction numerator theta over denominator 2 end fraction$

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Six $stack a with rightwards arrow on top comma stack b with rightwards arrow on top comma stack c with rightwards arrow on top comma stack d with rightwards arrow on top comma stack e with rightwards arrow on top text and end text stack f with rightwards arrow on top$ vectors,havethemagnitudesanddirectionsindicatedinthefigure.Whichofthefollowing

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A man weighing 60 kg stands on the horizontal platform of a spring balance. The platform starts executing simple harmonic motion of amplitude 0.1 m and frequency $fraction numerator 2 over denominator pi end fraction H z$ . Which of the following statement is correct

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The variation of potential energy of harmonic oscillator is as shown in figure. The spring constant is

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Acceleration A and time period T of a body in S.H.M. is given by a curve shown below. Then corresponding graph, between kinetic energy (K.E.) and time t is correctly represented by

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A body of mass 0.01 kg executes simple harmonic motion (S.H.M.) about $x equals 0$ under the influence of a force shown below : The period of the S.H.M. is

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