# find the displacement and distance of a circular track of radius 5cm and timetaken by it is 2min 30sec . while the body taken 30sec to complete 1 round.

2
by lulu2000

by lulu2000

Displacement-0 cm

distance-2*3.14*5

31.4 cm of 1 round

for 5 round=31.4*5

157 cm

distance-2*3.14*5

31.4 cm of 1 round

for 5 round=31.4*5

157 cm

distance=2πr (circumference)

=2*3.14*5

=31.4 m for 1 round (2 min 30 sec=2*60 sec+30 sec=150 sec)

30 sec----->31.4 m

150 sec---->? Let it be x

30x=31.4*150

x=31.4*5

x=157 m

In 2 min 30 sec,it travels 157 m distance in 5 rounds.

distance-2*3.14*5

31.4 cm of 1 round

for 5 round=31.4*5

157 cm