Motion of a particle is defined by the position vector 
, where t is time in sec. Value of ' 
' for which position vector and acceleration are perpendicular to each other is -
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(1)
Given,
We need the value of 
for which position vector 
and acceleration 
are perpendicular.
Find velocity 
Hence,
Find acceleration 
Thus,
Use condition 
Using 
,
For perpendicular vectors,
Since time is positive,
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