Which calculation should i use?@_@

[shakie_ija]

which calculation should i use??@_@

Homework Statement

a 1.4 kg bottle of milk is lying horizontally in the rack. the two surfaces on which the bottle rest r 90⁰ apart, and the right surface makes an angle of 45⁰ with the respect to the ground. each surface exerts a force on the bottle that is perpedicular to the surface. determine the magnitude of each of these forces
* the bottle is lying 90 degree vertically

Homework Equations

f=ma?
w=mg?
or should i find the resultant force by using cos and sine

The Attempt at a Solution

ive tried..but all the answer are different..

 

[Doc Al]

Call the force exerted by each surface on the bottle F. What other forces act on the bottle? What's the net force on the bottle? Consider vertical components.