Two masses 8 kg and 12 kg are connected at the two ends of a light in extensible string that goes over a frictionless pulley . Find the acceleration of the masses , and the tension in the string when the masses are released.

Explanation

Here `m_(2) = 8 kg , m_(1) = 12 kg `
as a ` = ((m_(1)-m_(2))g)/(m_(1)+m_(2))`
` a = ((12- 8)9.8)/(12+8) = (39.2)/20 `
` = 1.96 m//s^(2)`
Again
`T = (2m_(1)m_(2)g)/(m_(1)+m_(2)) = (2xx 12 xx 8 xx 9.8)/((12+8)) = 94.1 N `