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AP EAMCET · PHYSICS · Laws of Motion

Two blocks A and B of masses 1.5 kg and 0.5 kg respectively are connected by a massless inextensible string passing over a frictionless pulley as shown in the figure. Block A is lifted until block B touches the ground and then block A is released. The initial height of block A is 80 cm when block B just touches the ground. The maximum height reached by block B from the ground after the block A falls on the ground is

  1. A 80 cm
  2. B 120 cm
  3. C 140 cm
  4. D 160 cm
Verified Solution

Answer & Solution

Correct Answer

(B) 120 cm

Step-by-step Solution

Detailed explanation

Common acceleration of the system is given by- asys=1.5-0.51.5+0.5 g=g2=5 m s-2 When block of mass 1.5 kg hits the ground, at that time block of mass 0.5 kg will be at a height of 80 cm from the ground. After this point string become slack and block…