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Two blcoks of mass 10kg and 2kg respectively are connected by an ideal string passing over a fixed smooth pulley as shown in figure. A monkey of 8kg started climbing the string with constant accleration `2ms^(-2)` with respect to string t=0. Initially the monkey is 2.4m from the pulley. Find the time taken by the monkey to reach the pulley. A. 1 secB. 2 secC. 4 secD. 3 sec |
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Answer» com of both sides will move with same acceleration `(8(a_(0)-a)-2a)/(10)=(10a)/(10)rArra=(2)/(5)a_(6)` Acceleration of monkey with respect to ground `=a_(0)-a=0.6 a_(0)=1.2 ms^(-2)` `t=sqrt(2(2.4))/(1.2)=2` sec. |
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