3-1.Vectors
medium

Three girls skating on a circular ice ground of radius $200 \;m$ start from a point $P$ on the edge of the ground and reach a point $Q$ diametrically opposite to $P$ following different paths as shown in Figure. What is the magnitude of the displacement vector for each ? For which girl is this equal to the actual length of path skate ?

Option A
Option B
Option C
Option D

Solution

Displacement is given by the minimum distance between the initial and final positions of a particle. In the given case, all the girls start from point $P$ and reach point $Q$. The magnitudes of their displacements will be equal to the diameter of the ground.

Radius of the ground $=200 \,m$ Diameter of the ground $=2 \times 200=400 \,m$

Hence, the magnitude of the displacement for each girl is $400\, m$. This is equal to the actual length of the path skated by girl $B$.

Standard 11
Physics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.