- #1
wesleyneary
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I am stuck on a piece of my homework assignment
here it is
The following equations describe the motion of a system of two objects.
FN - (6.50 kg)(9.80 m/s2) cos(13.0˚) = 0
Ff,k = 0.360(FN)
FT + (6.50 kg)(9.80 m/s2) sin(13.0˚) - Ff,k = (6.50 kg) a
-FT + (3.80 kg)(9.80 m/s2) = (3.80 kg) a
(a) Solve the equations for a and FT. (b) Draw a free-body diagram for both objects. (c)
Describe a situation to which these equations apply.
I have solved for FN and then solved for Ff,k using that information
FN=62.07N and Ff,k+22.35 N (assuming i did my algebra correctly)
form here i know if i solve for acceleration of Ftension i can solve for the other.
I tried using a system of equations to solve for "a" by solving for Ft in on equation and plugging it into to other. when i do that i end up with the variable I am solving for cancelling out.
Any suggestions?
here it is
The following equations describe the motion of a system of two objects.
FN - (6.50 kg)(9.80 m/s2) cos(13.0˚) = 0
Ff,k = 0.360(FN)
FT + (6.50 kg)(9.80 m/s2) sin(13.0˚) - Ff,k = (6.50 kg) a
-FT + (3.80 kg)(9.80 m/s2) = (3.80 kg) a
(a) Solve the equations for a and FT. (b) Draw a free-body diagram for both objects. (c)
Describe a situation to which these equations apply.
I have solved for FN and then solved for Ff,k using that information
FN=62.07N and Ff,k+22.35 N (assuming i did my algebra correctly)
form here i know if i solve for acceleration of Ftension i can solve for the other.
I tried using a system of equations to solve for "a" by solving for Ft in on equation and plugging it into to other. when i do that i end up with the variable I am solving for cancelling out.
Any suggestions?