- #1
leenix
- 4
- 0
My physics exams are on monday.
I'm going to a univecity and I've never seriously studied physics up to now. I'm making baby steps into learning some of the basics I've never learned.
I've got this one Review Problem I'm having problems solving.
Info : g=10ms^-2 Sin30=0.5 Cos30=0.866
A box of mass m = 50 kg is initially at rest at point A on a floor with coefficient of kinetic friction μk = 0.1 (see figure below). A person starts pulling the box for a distance Δx = 40 m (from point A to point B) with a force FP = 100 N which acts at a 30o angle as shown in the figure and the box moves horizontally.
a) Draw the free-body diagram of all forces acting on the box
Drawing the Free body diagram is easy, i don't need help on this one actually.
b) Find the normal force FN on the box
Need help :(
c) Find the friction force Ffr on the box
If i'd only knew how to find FNormal :(
d) Calculate the acceleration a of the box
a=FNormal / m ( m = mass )
Sin30= FpY/FP = 0.5 (FPY, Y is the Y axis )
Cos30=FPX/FP = 0.866 (FPX, X is the X axis )
Here on there's supposed to be a way to Convert the above results to Newton Force.
I don't know how to do that :S
Anyway i need help with these, could someone help me ? :S
I'm going to a univecity and I've never seriously studied physics up to now. I'm making baby steps into learning some of the basics I've never learned.
I've got this one Review Problem I'm having problems solving.
Info : g=10ms^-2 Sin30=0.5 Cos30=0.866
A box of mass m = 50 kg is initially at rest at point A on a floor with coefficient of kinetic friction μk = 0.1 (see figure below). A person starts pulling the box for a distance Δx = 40 m (from point A to point B) with a force FP = 100 N which acts at a 30o angle as shown in the figure and the box moves horizontally.
a) Draw the free-body diagram of all forces acting on the box
Drawing the Free body diagram is easy, i don't need help on this one actually.
b) Find the normal force FN on the box
Need help :(
c) Find the friction force Ffr on the box
If i'd only knew how to find FNormal :(
d) Calculate the acceleration a of the box
a=FNormal / m ( m = mass )
Sin30= FpY/FP = 0.5 (FPY, Y is the Y axis )
Cos30=FPX/FP = 0.866 (FPX, X is the X axis )
Here on there's supposed to be a way to Convert the above results to Newton Force.
I don't know how to do that :S
Anyway i need help with these, could someone help me ? :S