Mass is a base unit, acceleration is a derived unit calculated as a function of length and time which are both base units. Any unit definition that is a function of more basic units is considered a derived unit. ~Quora.com
Answer:
(a) The least time required for the rotation is 50 seconds
(b) The corresponding value of α₁ is 1.6 rad/s²
Explanation: Please see the attachments below
Did you mean to put a picture with the question
A greater weight so the object has greater weight
Answer:
A plain mirrior is a mirrior with flat reflective surface.
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