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Grade 12Mechanics

Please assit me with this question.................

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Profile image of Rushil
8 Years agoGrade 12
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1 Answer

Profile image of Arun
8 Years ago
From the differential form of the Newton's second law of motion
 
m (dv/dt) = F(x)
 
m (dx/dt) (dv/dx) = F(x)
 
mv dv/dx = tan A x - Fo
 
m vdv = tan A xdx - Fo dx
 
On integrating
 
mv²/2 = tanA x²/2 - Fo x
 
Now
 
 
tanA x²/2 - Fo x = 0
 
Hence
 
x = 2Fo/tan A
 
Option 1 is correct