The angular momentum of a particle about origin is varying as L = 4t + 8 (S Ι units) when it moves along a straight line y = x – 4 (x,y in meters). The magnitude of force acting on the particle would be :
A
1 N
B
2 N
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
τ = 
= 4
from figure 
m
Hence τ = 
4 = 
.F ∴ F = 
N
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