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Problem#2: (15 Given the following figure where an object moves on a surface with a coefficient of kinetic friction $\mu_k$ = 0.30 and where its initial velocity is equal to 4 meters/sec. in that path: F = 4000 N m = 1200 kg 30° 50 m a) Determine la magnitud del peso ($w$). b) Determine the magnitude of the normal ($n$). c) Determine the magnitude of kinetic friction ($F_{rk}$). Note: Remember that $\mu_k = (\mu_k)(n)$. d) Determine the work done by each force on the object ($W_o$, $W_{Frk}$, $W_F$). e) Determine the total work done ($W_{total}$). f) Determine the initial kinetic energy ($K_i$). g) Determine the final kinetic energy ($K_f$) using the work-energy theorem. h) Determine the final velocity ($v_f$). Solution:

          Problem#2: (15
Given the following figure where an object moves on a surface with a coefficient of kinetic friction
$\mu_k$ = 0.30 and where its initial velocity is equal to 4 meters/sec. in that path:
F = 4000 N
m = 1200 kg
30°
50 m
a) Determine la magnitud del peso ($w$).
b) Determine the magnitude of the normal ($n$).
c) Determine the magnitude of kinetic friction ($F_{rk}$). Note: Remember that $\mu_k = (\mu_k)(n)$.
d) Determine the work done by each force on the object ($W_o$, $W_{Frk}$, $W_F$).
e) Determine the total work done ($W_{total}$).
f) Determine the initial kinetic energy ($K_i$).
g) Determine the final kinetic energy ($K_f$) using the work-energy theorem.
h) Determine the final velocity ($v_f$).
Solution:

Problem#2: (15
Given the following figure where an object moves on a surface with a coefficient of kinetic friction
= 0.30 and where its initial velocity is equal to 4 meters/sec. in that path:
F = 4000 N
m = 1200 kg
30°
50 m
a) Determine la magnitud del peso (w).
b) Determine the magnitude of the normal (n).
c) Determine the magnitude of kinetic friction (Frk). Note: Remember that = ()(n).
d) Determine the work done by each force on the object (Wo, WFrk, WF).
e) Determine the total work done (Wtotal).
f) Determine the initial kinetic energy (Ki).
g) Determine the final kinetic energy (Kf) using the work-energy theorem.
h) Determine the final velocity (vf).
Solution:

Added by Roberto J.

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