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Two masses m1 and m2 are connected with a string passing over a frictionless pulley fixed at the corner of the table as shown in the figure. The coefficient of static friction of mass m1 with the table is `mu_(s)` Calculate the minimum mass m3 that may be placed on m1to prevent it from sliding. Check if m1=15 kg, `m2= 10 kg, m3= 25 and mu_(s)=0.2`

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The correct Answer is:
`a=4 ms^(-2)` zero
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