Question

A body covers one revolution around a circle of circumference 7 m in 7 s Find the distance and displacement of the body after 14 s

Answer 1

Step-by-step explanation:

Given A body covers one revolution around a circle of circumference 7 m in 7 s Find the distance and displacement of the body after 14 s  

• Circumference of circular path = 2 π r = 7 m
•                                                = 2 x 22 / 7 x r = 7
•                                   Or r = 49 / 44 m
• Diameter = 2r = 2 x 49 / 44
•                        = 49 / 22 m
• Number of revolutions completed in 7 secs = 1
• Number of revolutions completed in 14 secs = 1/7 x 14 = 2 revolutions
• Therefore distance = total path travelled = 2 π r + π r = 3 π r  
•                                                                                   = 3 x 22 / 7 x 49 / 22
•                                                                                            = 21 m
• Displacement = Final position – initial position
•                         = Diameter
•                        = 49 / 22 m  
•                          = 2.227 m

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https://brainly.in/question/348410