F的竖直分量Fy=Fsin37°=6*0.6=3.6N
F的水平分量Fx=Fcos37°=6*0.8=4.8N
f=u(mg+Fy)=u(0.5*10+3.6)=8.6u
Fx-f=ma
4.8-8.6u=0.5*5=2.5
动摩擦因数为
u=(4.8-2.5)/8.6=0.267
F的竖直分量Fy=Fsin37°=6*0.6=3.6N
F的水平分量Fx=Fcos37°=6*0.8=4.8N
f=u(mg+Fy)=u(0.5*10+3.6)=8.6u
Fx-f=ma
4.8-8.6u=0.5*5=2.5
动摩擦因数为
u=(4.8-2.5)/8.6=0.267