An athlete completes one round of a circular track of radius R in 40 sec . What will be his displacement at the end of 2 min. 20 sec
A
Zero
B
2 R
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Total time of motion is 2 min 20 sec = 140 sec .
As time period of circular motion is 40 sec so in 140 sec . athlete will complete 3.5 revolution i.e., He will be at diametrically opposite point i.e., Displacement = 2 R .
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