Question

answerr this nlm question with explanation

Answer 1

Explanation:

no. 2 is the correct option.

Answer 2

Answer:

Explanation:

angle for which it remains in equilibrium

summation fx=0

macos30=2macostheta

root 3 / 4 = cos theta

sintheta = root7 / 4

driving force = 2mgsintheta-mgsintheta / 3m

driving force = 2mgroot7 / 4 - 2mg/4 / 3m

acceleration = groot7-g / 6

acceleration = g(root7-1)/6

velocity after 2 sec release = 2g(root7-1)/6

condition for tighting =

displacement of m = displacement of 2m

1/2at^2 = ut+1/2at^2

1/2(gsin30)t^2 = ut+1/2(gsintheta)t^2

5t^2(1/2-(root7)/4 ) = ut

5t(2/4 - root7/4) = 20/6(root7-1)