Explain, please legibly 10. Translational kinetic energy is relative to the frame of reference of the...

Explain, please legibly
10. Translational kinetic energy is relative to the frame of reference of the observer, Is rotational kinetic energy similarly also relative to the frame of reference? Explain with an example.

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Expert Solution

Solution:

Translational Kinetic energy is relative to the frame of reference . For example a person sitting in a moving train has zero kinetic energy with respect to another person sitting adjacent to him ; but they both have the same kinetic energy as the moving train with reference to a stationary observer .

Rotational kinetic energy is the kinetic energy possessed by a spinning object. It is different from linear kinetic energy , when it comes to frames of reference.

Kinetic energy of rotation is frame invariant . It does not change in a rotating frame of reference. Consider a merry go round rotating about a fixed axis . For a stationary observer on the ground, a person on the merry go round will be seen to have the same rotational kinetic energy as the rotating frame of reference itself . Rotational kinetic energy is invariant .

Rotational kinetic energy changes only when viewed from another rotating frame of reference.

genius_generous answered 2 years ago

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