In the following figure m1 = 20.0 kg and α = 51.6 ∘. The coefficient of kinetic friction between the block and the incline is μk = 0.40.(Figure 1)
What must be the mass m2 of the hanging block if it is to descend 9.50 m in the first 3.00 s after the system is released from rest?
acceleration of the system
d = 0.5 at^2
9.5 = 0.5* a * 3^2
a = 2.11 m/s^2
FBD of hanging block
m a = mg - T
T = mg - ma ... (i)
FBD of other block
M a = T - u M g cos x - Mg sin x
from (i)
20* 2.11 = m * 9.8 - 2.11 m - 0.4* 20* 9.8* cos 51.6 - 20* 9.8* sin 51.6
m = 31.794 kg
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In the following figure m1 = 20.0 kg and α = 51.6 ∘. The coefficient of...