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Ram Prasath posted an Question

August 20, 2021 • 02:39 am

30 points

IIT JAM
Physics (PH)

Friends please explain this answer and also explain the questions that are attached with it?

1 Answer(s)

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Bidyut sinha

yes, that is impulse...But Impulse is equal to torque× time interval...then per unit time interval ,that is equal to change in angular Momentum...Check the attached picture.
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Bidyut sinha Best Answer

please check the attached picture.
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in the last step how do u calculate the value of v?
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Ram prasath

but j is for impulse right.
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Ram prasath

also in the 9th question u have said j=r×p.
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Bidyut sinha

In the 7 th Question, it's asking to obtain the velocity .Now I have applied simple time dilation and length contraction formula .But before that I have written a formula (that in general Formula we write in Physics) that V=L/t...I have taken this concept because from that I will get proper length and time...Then in the formula of time dilation and length contraction, I have used them... Because proper length Value is given...so from that equation I have obtained Velocity...
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Bidyut sinha

please check the attached picture.
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i don't understand the 7th question. could u explain that problem please?
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In the 7 th Question, it's asking to obtain the velocity .Now I have applied simple time dilation and length contraction formula .But before that I have written a formula (that in general Formula we write in Physics) that V=L/t...I have taken this concept because from that I will get proper length and time...Then in the formula of time dilation and length contraction, I have used them... Because proper length Value is given...so from that equation I have obtained Velocity...
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really thank you for ur answer, but could u derive it once more. i think it would be easy to understand the problem.
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Sure... wait please
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also in the 9th question u have said j=r×p.
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yeah... telling... wait... first let me tell ur first doubt in copy... after that I will tell...
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please check the attached picture
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yes, that is impulse...But Impulse is equal to torque× time interval...then per unit time interval ,that is equal to change in angular Momentum...Check the attached picture.
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in that 9th question , i don't understand the method 2 . could u please make it clear
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ok let me check... which u r telling... please wait
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it's Just Vector cross multiplication and component break method..@Ram :)
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