The coeeficent of kinetic friction (uk)= 0.2.
A. Draw a feed body diagram of all forces acting on the box.
B. Find the force of kinetic friction.
C. Find the accleration of the box.
The answer for B is fk= 53.75 N
The answer for C is a= 1 m/s squared upwards
I know the answers for the B and C, but I need their work and the answer to A as well
Click link to see a diagram
http://img.photobucket.com/albums/v63/xmattbrettlockx/Physics1.jpg
2007-11-19 09:40:17 · 1 answers · asked by joe s 1 in Science & Mathematics ➔ Physics
fendi didn't take the slope into consideration
The forces are the horizontal force and gravity and friction
net force equals m*a
The force of friction is
(m*g*cos(30)+198*sin(30))*0.2
53.75 is correct
the force up is
198*cos(30)-m*g*sin(30)-53.75
this is equal to m*a
a= 1 m/s parallel to the slope upwards.
j
2007-11-19 10:01:33 · answer #1 · answered by odu83 7 · 0⤊ 0⤋