1.A 5kg block is hanging by a wire from an 8kg block that is hanging by a wire connected over a frictionless pulley to a 10kg block on a 30degree incline.The whole system is accelerating at a rate of 5m/s^2 up the ramp and over the pulley. Determine the coefficient of kinetic friction of the ramp.
Show all work please.
I really want to understand how to do this. :)
Show all work please.
I really want to understand how to do this. :)
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find the tension force excerted by (5 + 8) kg blocks on the 10 kg block :
(5 + 8) g - T = (5 + 8) a
so T = 13 (g - a) = 62.4 N
hence for the 10 kg block :
T - mgsin30 - Fr = ma
so 62.4 - 10(9.8)(0.5) - (uk mg cos30) = 10 a
=> 13.4 - 84.87 uk = 50
so uk is minus which is wrong
can u supply a diagram ?!!
(5 + 8) g - T = (5 + 8) a
so T = 13 (g - a) = 62.4 N
hence for the 10 kg block :
T - mgsin30 - Fr = ma
so 62.4 - 10(9.8)(0.5) - (uk mg cos30) = 10 a
=> 13.4 - 84.87 uk = 50
so uk is minus which is wrong
can u supply a diagram ?!!