Grade 12th passMechanics
A unit vector is expressed as n cap=0.4i+0.8j+ck. The value of c must be. Please explain.
A unit vector is expressed as n cap=0.4i+0.8j+ck. The value of c must be.
Please explain.
1 Answer
Arun
Approved Tutor Answer8 Years agoDear Ishan
Unit vector means its modulus is 1
hence
sqrt (0.16+0.64+c^2) = 1
0.80 + c^2 = 1
c^2 = 0.20
c = ± sqrt(0.20)
Regards
Arun (askIITians forum expert)
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