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an_mui
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Body B weighs 440 N and body A weighs 140N. The coefficients of friction between B and the incline are Us = 0.56 and Uk = 0.25.
a) Find the acceleration of the system if B is initially at rest
b) Find the acceleration of the system if B is moving up the incline
c) Find the acceleration of the system if B is moving down the incline.
(diagram: mass B is on the incline, and a is hanging)
For a, my teacher showed us the following solution:
a) mass b (g)(sin theta) ?> mass a (g)
a = ((mass b)(g sin theta) - (mass a)(g) - Ffriction) / (mass B + mass A)
= 0
Could someone explain this solution to me? I think I will be able to figure out parts b and c once i understand part a.
Thanks in advance and sorry I couldn't scan the diagram.
a) Find the acceleration of the system if B is initially at rest
b) Find the acceleration of the system if B is moving up the incline
c) Find the acceleration of the system if B is moving down the incline.
(diagram: mass B is on the incline, and a is hanging)
For a, my teacher showed us the following solution:
a) mass b (g)(sin theta) ?> mass a (g)
a = ((mass b)(g sin theta) - (mass a)(g) - Ffriction) / (mass B + mass A)
= 0
Could someone explain this solution to me? I think I will be able to figure out parts b and c once i understand part a.
Thanks in advance and sorry I couldn't scan the diagram.
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