Question

A box is pushed with a 245 N of force on a horizontal surface as it moves with a

constant velocity. The mass of the box is 104 kg. The box experiences a force of friction
of 45 N.
a. Draw a free body diagram with Fg, FN, F₂ and F₁.
b. Find the weight of the box.
c. Find the coefficient of friction as the box is moving.
d. Find the net force acting the box.

Answer 1

Step-by-step explanation:

b) Fg = W = mg = (104 kg)(9.8 m/s²) = 1019.2 N (weight of the box)

Ff = (coeff. friction)(N)

N = normal force = Fg = 1019.2 N

c) coeff. friction = Ff/N = 45 N/1019.2 N = 0.044

d) Fnet = 245 N - 45 N = 200 N

It's hard to draw a free body diagram with the available symbols, but here's a try at it. Just add a box between the arrows!

W

↓

Ff → ← Fapplied

↑

N