Answer:
The second knife-edge must be placed 46.2 cm from the zero mark of the rod.
Explanation:
From the law of equilibrium, ΣF = 0 and ΣM = 0.
Let R be the reaction at the knife edge. Since the weight of the rod and zinc load act downward, and we take downward position as negative
-32 N - 2 N + R = 0
-34 N = -R
R = 34 N
Also, let us assume the knife-edge is x cm from the zero mark. Taking moments about the weight and assuming the knife-edge is right of the weight of the rod. Taking clockwise moments as positive and anti-clockwise moments as negative,
-(45 - 25)2 + (x - 45)R = 0
-(20)2 + (x - 45)34 = 0
-40 = -(x - 45)34
x - 45 = 40/34
x - 45 = 1.18
x = 45 + 1.18
x = 46.18 cm
x ≅ 46.2 cm
The second knife-edge must be placed 46.2 cm from the zero mark of the rod.
Answer:
Explanation:
Given that,
The Camden holds a volume of
V = 2,000,000 gallons
At a height of
h = 24 m
We want to find the potential energy.
And potential energy can be calculated using
P.E = mgh
Where
m is the mass
g Is the acceleration due to gravity
h Is the height.
Given that,
Then volume is
V = 2,000,000 gallons
From research.
1 gallon ≈ 3.785 kg
Then,
2,000,000 gallons = 2,000,000 × 3.785 kg
So,
P.E = mgh
P.E = 2,000,000 × 3.785 × 9.81 × 24
P.E = 1.782 × 10^9 J.
A because the normal force always acts perpendicular and away from the surface an object is in contact with.
Answer:true
Explanation:because the double lights