A piston in a gas supply pump has an
2 answers:
<h2>Option A is the correct answer.</h2>
Explanation:
Pressure is the ratio of normal force to the area.
Force = Pressure x Area
Area = 500 cm² = 0.05 m²
Pressure = 4000 Pa
Force = 0.05 x 4000 = 200 N
We know that
Work done = Force x Displacement
W = F x d
Displacement, d = 30 cm = 0.3 m
W = 200 x 0.3 = 60 Joules.
Option A is the correct answer.
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Answer:
μ = 0.6
Explanation:
given,
speed of car = 29.7 m/s
Radius of curve = 50 m
θ = 30.0°
minimum static friction = ?
now,
writing all the forces acting along y-direction
N cos θ - f sinθ = mg
N cos θ -μN sinθ = mg
now, writing the forces acting along x- direction
N sin θ + f cos θ = F_{net}
N cos θ + μN sinθ = F_{net}
taking cos θ from nominator and denominator
now, inserting all the given values
μ = 0.6
