CBSE-XI-Physics
12: Simple Harmonic Motion
- #7Which of the following quantities are always positive in a simple harmonic motion?
(a)
F→. a→.
(b)
v→. r→.
(c)
a→. r→.
(d)
F→. r→.Ans : `` \left(a\right)\stackrel{\rightharpoonup }{F}.\stackrel{\rightharpoonup }{a}``
`` ``
As the direction of force and acceleration are always same, `` \stackrel{\rightharpoonup }{F}.\stackrel{\rightharpoonup }{a}``is always positive.
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