A particle stays at rest as seen in a frame. We can conclude that… - Vidyadip

MCQ

A particle stays at rest as seen in a frame. We can conclude that,

A
The frame is inertial.
B
The frame may be non$-$inertial but there is a non zero resultant force.
C
The frame may be inertial but resultant force on the particle is zero.
✓
$B$ and $C$

✓

Answer

Correct option: D.

$B$ and $C$

Particle will be seen at rest only when frame is inertial and resultant force on particle is zero.
Also, if frame is non inertial $($i.e., accelerated$),$ the particle must also possess the same acceleration in magnitude and direction
i.e., resultant force on the particle must be non zero.

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