Question
To locate the position of the particle we need ...(A) a frame of reference(B) direction of the particle(C) size of the particle(D) mass of the particle
Step 1
A frame of reference is a set of coordinate axes in relation to which measurements are made. It is a system of geometric axes in relation to which size, position, or motion can be defined. Show more…
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Key Concepts
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The positon vector of a particle is $\vec{r}-a\lfloor\cos \omega t \hat{i} \mid \sin \omega t \hat{j}]$. The velocity of the particle is (a) parallcl to position voctor (b) dirceted towards origin (c) dirceled away from origin (d) perpendicular to position vector.
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Section B
The position vector of a particle is $\vec{r}=a[\cos \omega t \hat{i}+$ $\left.\sin \omega t^{-} j\right]$. The velocity of the particle is (A) parallel to position vector. (B) directed towards origin. (C) directed away from origin. (D) perpendicular to position vector.
The position vector of a particle is $\vec{r}=(a \cos \omega t) \hat{i}+(a \sin \omega t) \hat{j}$. The velocity vector of the particle is (A) Parallel to the position vector (B) Perpendicular to the position vector (C) Directed towards the origin (D) Directed away from the origin
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