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willingtolearn
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Find the acceleration experienced by each of the two masses shown in the picture below if the coefficient of friction between the 7 kg mass and the plane is .25 ?
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In the picture, is the force of fiction go that way ?
http://img515.imageshack.us/img515/893/img3394dj7.jpg [Broken]
m1 = 7kg u = .25
m2 = 12kg
F (per) = F (normal)
F (per) = 68.6 cos 37 = 54.8 N
F (parallel) = 68.66 sin 37 = 41.3 N
F net = (12*9.8) - 1.75 = 115.85 N
115.85 / 19 = 6.1 m/s2
So 7 kg is accelerate at 6.1 m/s2 and 12 kg is the same but in the negative direction.
Is this right ?
------------
In the picture, is the force of fiction go that way ?
http://img515.imageshack.us/img515/893/img3394dj7.jpg [Broken]
m1 = 7kg u = .25
m2 = 12kg
F (per) = F (normal)
F (per) = 68.6 cos 37 = 54.8 N
F (parallel) = 68.66 sin 37 = 41.3 N
F net = (12*9.8) - 1.75 = 115.85 N
115.85 / 19 = 6.1 m/s2
So 7 kg is accelerate at 6.1 m/s2 and 12 kg is the same but in the negative direction.
Is this right ?
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