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1. |
A block of mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will ___________ with the increase in coefficient of friction. |
A. | Increase |
B. | Decrease |
C. | Not be effected |
D. | None of these |
Answer» B. Decrease | |