the two crates are released from rest. Their masses are mA = 40 kg and mB = 30 k
ID: 2998483 • Letter: T
Question
the two crates are released from rest. Their masses are mA = 40 kg and mB = 30 kg, and the coefficient of kinetic friction between crate A and the inclined surface is µk = 0.15. What is the magnitude of the velocity of the crates after 40 cm ? use the principle of work and energy for the system of the two crates to solve this problem
(to measure the gravitational potential energy , establish separate datums at the intial elevations of A and B)
the two crates are released from rest. Their masses are mA = 40 kg and mB = 30 kg, and the coefficient of kinetic friction between crate A and the inclined surface is ?µk = 0.15. What is the magnitude of the velocity of the crates after 40 cm ? use the principle of work and energy for the system of the two crates to solve this problem (to measure the gravitational potential energy , establish separate datums at the intial elevations of A and B)Explanation / Answer
30*9.81*.15*40/100=.5*40*vb2
ans=.93m/s or 93cm/s
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