Answer:
8100 lbin²
Explanation:
Moment or inertia is expressed using the formula
I = mr²
M is the mass of the body
r is the radius of gyration
Given
W = 100lb
r = 9in
Required
Moment of inertia
I = Wr²
I = 100(9)²
I = 100×81
I = 8100lbin²
Hence the moment of inertia about the center of gravity for the rotator is
8100 lbin²
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Chile is the razor thin country you're talking about.
Why? Because Chile accounts more than half of the western coastline of South America.
Why again you ask? Well that's easy. Chile stands with a palatable coastline of about 2,600 miles.
Answer:
v_r = 3.1974 km/h @ a = 77.8 degrees south of east
Explanation:
Given:
- velocity of ferry v_f = 18 km / h
- velocity of ferry relative to river v_f/r = 18.4 km /h
Find:
Determine the velocity of the river v_r.
Solution:
- make a graphical representation of the information given as shown:
- Use the vector equations that relates frames:
v_f = v_r + v_f/r
- Use cosine rule on the given representation:
v_r^2 = v_f ^2 + v_f/r^2 - 2*v_f/r*v_f*cos(10)
v_r^2 = 18^2 + 18.4^2 - 2*18*18.4*cos(10)
v_r^2 = 336.3916
v_r = 3.1974 km/h
- Use sine law for direction:
18 / sin(a) = 3.1974 / sin 10
sin (a) = 0.9775652712
a = 77.8 degrees
The parts of a bike that work together as a subsystem are:
• The Wheel
• Drivers & Gears
• Frames & Materials
• Brakes & Steering
• Aerodynamics
• Human Power
When the pedals on a bicycle move, they turn the gear. When the gear turns, it moves the chain. The moving chain makes the back wheel turn – and that pushes the bicycle forward. ... The handlebars, frame, and front-wheel all work together for steering.
