Question

A particle is moving in a circle of diameter 5 m.
What is its displacement when it completes

1 1/2 revolutions​

Answer 1

Answer:

5m

Explanation:

11/2 revolutions = 5.5 revolutions = 5 complete revol. + 1/2 revolution

In 1 complete revol, displ = 0

so in 5 complete revol, displ =0

In the last 1/2 revolution, person will be on the opposite side of the diameter, so the net displacement = diameter= 5m

Answer 2

Answer:

displacement = 7.855m

Explanation:

Diameter = 5m

so, the radius = 5 / 2 = 2.5m

therefore the circumference = 2 pie r = 2 x 22 / 7 x 2.5 = 15.71

As the number os revolutions = 11 / 2 or 11 x 1 / 2

so as the 11 revolution displacement will be 0 as the object is coming at the same point ,

but after the 11th revolution the 1 / 2 of the circumference will be the required displacement.

so , 15.71 x 0.5 = 7.855m