Physics, 19.05.2020 16:20, reecedstceklein
Since the floor is rough, it exerts both a normal force N1 and a frictional force f1 on the ladder. However, since the wall is frictionless, it exerts only a normal force N2 on the ladder. The ladder has a length of
L = 4.50 m,
a weight of
WL = 51.5 N,
and rests against the wall a distance
d = 3.75 m
above the floor. If a person with a mass of
m = 90 kg
is standing on the ladder, determine the following.
(a) the forces exerted on the ladder when the person is halfway up the ladder (Enter the magnitude only.)
N1 = N
N2 = N
f1 = N
(b) the forces exerted on the ladder when the person is three-fourths of the way up the ladder (Enter the magnitude only.)
N1 = N
N2 = N
f1 = N
Answers: 3
Physics, 22.06.2019 07:30, amakayla57
Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?
Answers: 3
Since the floor is rough, it exerts both a normal force N1 and a frictional force f1 on the ladder....
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