- #1
nightshade123
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Homework Statement
A block is shoved up a 22 deg slope with an Initial speed of 1.4 m/s the coefficient of Kinetic friction is .7...
a) how far up the slope will hte block get?
b) will the block come back down?note the bold is just a sign change, a diffrent possibility
2. Homework Equations and The attempt at a solution
x: f*g*sintheta+Friction of the surface = MAsubx
y: n- Force of g * costheta = 0
solve for Asubx and N
put n into the Ax eqn
Asubx = (m*g * sintheta - myuk * m * g * costheta) / m
m cancels factor out g
and use
v^2 = v0^2 + 2a(x-x0)v^2 = v0^2 + (2 ( g (sin theta)- myuk *costheta)))*(x-x0)
v = 0 m/s
v0= 1.4 m/s
g = 9.8 m/s^2
theta = 22 degrees
myuk = .7
x0 = 0 m
x = ? m
i get .364 m for part a and i said no it will not return back down due to a small incline and small v0
i THINK I am right but I am not 100% confident
note: i have a free body diagram and such ill make on in PAINT if u want me to, let me know, thanks for your time!
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