Both the blocks are of same mass and initially at rest. Blo…

Physics Newton's Laws of Motion Mix MCQ (Single Correct)

Both the blocks are of same mass and initially at rest. Block B starts swinging.

Equilibrium is disturbed

Acceleration of block B in vertical direction is less than that of A in vertical direction

At extreme position tension in string is less than weight of block B

At mean position tension in string is less than weight of block B

Text Solution

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The correct answer is:

CHECK THE SOLUTION.

(a, c)

At mean position: T – mg = mv 2 / λ

T = mg + mv 2 / λ

At extreme position:

T – mg cos θ = = 0

T = mg cos θ

At any position between extreme and mean

mg – T cos θ = m (a y ) B

(a y ) B = g –

mg – T = m (a y ) A

(a y ) A = g –T/m

⇒ (a y ) B > (a y ) A

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