Answer:
Aristarchus
Explanation:
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Lift force exerted by the air on the rotors=143244 N
we use Newtons second law
F- (M+m)g=(M+m)a
F= lift force
m= mass of helicopter= 13000 Kg
M= mass of car= 2000 lb=907.2 kg
a= acceleration= 0.5 m/s²
g= acceleration due to gravity
F=(M+m)(a+g)
F=(13000+907.2)(0.5+9.8)
F=143244 N
The force per unit length between the two wires is
The magnitude of the force per unit length exerted between two current-carrying wires is given by
where
is the vacuum permeability
are the currents in the two wires
r is the separation between the two wires
For the wires in this problem, we have
r = 2.00 cm = 0.02 m
Substituting into the equation, we find
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