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A particle performs SHM along a straight...

A particle performs SHM along a straight line and its position is `vec(R )`, acceleration is `vec(a)`, velocity is `vec(v)` is and force on particle is `vec(f)`. Then which of the following statement are true?
(i) `vec(v). vec(a)` is always + ve
(ii) `vec(v).vec(R )` may be -ve
(iii) `vec(f).vec(R )` is always -ve
(iv) `vec(v)` is parallel to `vec(f)` sometimes

A

ii, iii & iv

B

i, ii & iv

C

i, iii & iv

D

ii & iii

Text Solution

Verified by Experts

The correct Answer is:
A
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