A particle is moving along a circular track of radius 12 cm.
(i) What is the resultant displacement in one revolution ?
(ii) What is the distance travelled by the particle in two and a half revolutions ?

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Solution

i) The resultant displacement will be zero because after one revolution the particle returns to its initial position.
ii) Here,
r = 12 cm
Distance travelled in 1 revolution = 2Ï€r
Distance travelled in 2½ revolution = (5/4) Ã— 2Ï€r
= (5/4) Ã— 2 Ã— 22/7 Ã— 12
= 94.3 cm
= 94 cm (approx)

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A particle is moving along a circular track of radius 12 cm.(i) What is the resultant displacement in one revolution ?(ii) What is the distance travelled by the particle in two and a half revolutions ?

A particle is moving along a circular track of radius 12 cm.
(i) What is the resultant displacement in one revolution ?
(ii) What is the distance travelled by the particle in two and a half revolutions ?