- #1
Natalie Johnson
- 40
- 0
Homework Statement
[/B]
My physics teacher - "You may like this question, its very structured"
Calculate the distance a slate tile falls from a roof
The roof is angled at an angle 30 degrees.
mass of slate tile is 0.8kg
The length of the roof is L=6m
The height of the roof above the ground is h=10m
The object will slide down the roof a distance L before it like launched as a projectile through the air until it reaches the ground.
Coefficient of friction is assumed to be 0.5
g is for gravity
Find d, the distance it reaches from the roof is d.
Homework Equations
Friction force = Normal Contact force * coefficient of friction
Resolving in Y Direction
Normal Contact force = mass * g * cos (30)
Resolving in X Direction
ForceX= mass*g* sin(30) - Friction Force
Now find acceleration of object sliding down roof using F=m*a
a = ForceX / m
Now find the velocity at the point the tile leaves the roof using v^2 = u^2 + 2*a*s
a = ForceX/m
s = Length of Roof = 6m
v = ??
Now find the range distance the project will travel
d_max = sqrt ( (v^2 / g) + 2 * (v^2 / g) * h )
The Attempt at a Solution
Please can you comment if my above logic and equations is good. I can plug the numbers in no problem.