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Comprehension
A block of mass \( 15 \mathrm{~kg} \) is placed over a frictionless horizontal surface. Another block of mass \( 10 \mathrm{~kg} \) is placed over it, that is connected with a light string passing over two pulleys fastened to the \( 15 \mathrm{~kg} \) block. A force \( F=80 \mathrm{~N} \) is applied horizontally to the free end of the string. Friction coefficient between two blocks is 0.6 . The portion of the string between 10 \( \mathrm{kg} \) block and the upper pulley is horizontal as shown in figure Pulley string and connecting rods are massless. (Take \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) )
The magnitude of acceleration of the \( 10 \mathrm{~kg} \) block is:
(a) \( 3.2 \mathrm{~m} / \mathrm{s}^{2} \)
(b) \( 2.0 \mathrm{~m} / \mathrm{s}^{2} \)
(c) \( 1.6 \mathrm{~m} / \mathrm{s}^{2} \)
(d) \( 0.8 \mathrm{~m} / \mathrm{s}^{2} \)
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