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A mass m hangs with the help of a string wrapped around a pulley on a frictionless bearing. The pulley has mass m and radius R. Assuming pulley to be a perfect uniform circular disc, the acceleration of the mass m if the string does not slip on the pulley, is |
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Answer» g `((1)/(2)mR^(2)+mR^(2))alpha=mg.R` `THEREFORE (3)/(2)mR^(2)alpha=mgR` `therefore alphaR=((2)/(3))g` `therefore` Acceleration .a. of the mass m is `((2)/(3))g`. |
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