Question

An object is moving in a circular path of radius 7cm. what is its distance covered and displacement when it completes one round


n an object is moving along a circular path of radius 7 cm what is its distance covered and displacement when it complete one round ​

Answer 1

Answer:

Displacement = 0 (since the object will return to initial position)

Distance = 2πr = 2*3.14*7 = 37.68 cm

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Answer 2

Answer:

Explanation:Find the circumference of the circle, and then divide by four.

C = pi x diameter.

Diameter = 2 x radius

3.1415927 * 2 * 7 = 43.98 cm

That's the distance of arc travelled.

The diplacement is a little earier, but, in this case, the initial condition is not clear.

In polar coordinates, with the origin at the center of the circle, the displacement is 90° in whichever direction the particle was moving (not specified). In cartesian coordinates, it'd be a simple task, if only we knew the original position of the particle, but since we do not know, we cannot say.