Question

a particle moves in a circle with O as centre and AO=OB=5cm,as radius as shown in figure.it starts from A. calculate_________________________________________________________a) distance covered? ________________b) the displacement when it reaches B?

Answer 1

where I the picture

Answer 2

Hy
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1.ans The distance covered,

Φ 2 πr = 2 × π × r
= 2 ×3.14 × 5
= 31.4 cm.

2.ans
The displacement
= 2 × OB = 2 × 5 = 10 cm
along AB.



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