- #1
alexandria
- 169
- 2
Homework Statement
Homework Equations
relevant equations are provided with each question below
The Attempt at a Solution
please check my solutions to ensure they are correct. thanks.
a) [/B]
b)
Calculate net force:
Fnet = FA + Ff + Fg
Fnet = (1.20 x 104 N [up]) + (1.40 x 103 N [down]) + (10094 N [down])
Fnet = (1.20 x 104 N [up]) – (1.40 x 103 N [up] + 10094 N [up])
Fnet = 506 N [up]
Calculate net acceleration:
Fnet = m a
a.net = Fnet /m
= 506 N [up] / 1030 kg
= 0.49 m/s2 [up]
c)
Relevant Equation to solve for the force normal:
FN = mg + ma
FN = (35 kg) (9.8 N.kg [down]) + (35 kg) (0.49 m/s2 [up])
FN = 360.15 N [up]
The force normal acting on this passenger is approximately 360 N [up].
e)
Given information:
v1 = 0
a = 0.49 m/s2 [up]
t = 12.0 s
Unknown:
v2 =?
Equation:
v2 = v1 + a x total time
= 0 + (0.49 m/s2) x (12.0 s)
= 5.88 m/s [up]
The velocity is approximately 5.9 m/s [up]