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Option 3.  The speed of lower end gets smaller and smaller and vanishes when upper end touches ground
Option 4.   The speed of lower end remain constant till upper end touches ground.
Plz answer
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Ans is 3
 
23 days ago

Answers : (1)

Utsav Basu
70 Points
							
     y2+x2=l2
or, 2y dy/dt+2x dx/dt = 0
or, x dx/dt = -y(-vy) = yvy     [Let dy/dt = -vy]
or, vx = vy(y/x)
 
Thus, since with time y decreases and x increases you will have the said result.
 
PS. I am also in Aakash. What’s your name?
23 days ago
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