Mechanics Problem 4

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  • Abhishek Kumar

    Apr 11th, 2019

  • Saminur Rahaman May 19th, 2019

    (a) Linear momentum

Mechanics Problem 3

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  • Abhishek Kumar

    Apr 11th, 2019

Do You Know? 2

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  • Abhishek Kumar

    Apr 11th, 2019

Do You Know?

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  • Abhishek Kumar

    Apr 1st, 2019

  • Priyangshu Pramanick Apr 1st, 2019

    (b) he is like real life Tony Stark..he've got money he've got plans ideas and everything

    Ashutosh Bisht Jul 7th, 2019

    C

Mechanics Problem 2

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  • Abhishek Kumar

    Apr 1st, 2019

  • Priyangshu Pramanick Apr 2nd, 2019

    It seems to be like (a) always x y

    Saminur Rahaman May 19th, 2019

    (a) x y

Science Quiz 2

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  • Abhishek Kumar

    Sep 16th, 2018

  • Enakshi Saha Nov 26th, 2018

    None of the above

    Someprabha Chakrabarti Feb 26th, 2019

    D

Kinematics Problem 2

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  • Abhishek Kumar

    Sep 16th, 2018

Kinematics Problem 1

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  • Abhishek Kumar

    Sep 16th, 2018

  • Enakshi Saha Nov 28th, 2018

    u = --v cot x

Rotational Mechanics Problem 2

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  • Abhishek Kumar

    Sep 7th, 2018

Rotational Mechanics Problem 1

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  • Abhishek Kumar

    Sep 7th, 2018

Model Answer:

The relationship Torque=(Moment of Inertia)*(Angular Acceleration) involves the term "angular acceleration". Obviously we can talk about angular acceleration of a system of particles about an axis only if all the particles in the system have same angular acceleration. Otherwise the term "angular acceleration" itself won't be defined. Thus, in general, angular acceleration is defined only for a particle or a rigid body (and not for a system of loose particles, as the angular acceleration of different particles will be different).

We also know that the given relationship is true for any rigid body, with respect to an axis passing through the body. The given relationship is trivially true for a particle.

Hence, the given relationship is true for a single particle as well as a rigid body.