Engineering High School

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You get on your bike and pedal one rotation how far does the bike travel (if it stops right when the
pedal completes 1 rotation)? The diameter of the pedal sprocket is 2.5 inches. The diameter of the
wheel sprocket is 6 inches. The diameter of the back wheel is 24 inches.

Answers

Answer 1

Answer:

7.8 Mph

Explanation:

Rate of cycling = 1.1 rev/s

Rear wheel diameter = 26 inches

Diameter of sprocket on pedal = 6 inches

Diameter of sprocket on rear wheel = 4 inches

Circumference of rear wheel =  \pi d=26\piπd=26π

Speed would be

\begin{gathered}\text{Rate of cycling}\times \frac{\text{Diameter of sprocket on pedal}}{\text{Diameter of sprocket on rear wheel}}\times{\text{Circumference of rear wheel}}\\ =1.1\times \frac{6}{4}\times 26\pi\\ =134.77432\ inches/s\end{gathered}Rate of cycling×Diameter of sprocket on rear wheelDiameter of sprocket on pedal×Circumference of rear wheel=1.1×46×26π=134.77432 inches/s

Converting to mph

1\ inch/s=\frac{1}{63360}\times 3600\ mph1 inch/s=633601×3600 mph

134.77432\ inches/s=134.77432\times \frac{1}{63360}\times 3600\ mph=7.65763\ mph134.77432 inches/s=134.77432×633601×3600 mph=7.65763 mph

The Speed of the bicycle is 7.8 mph

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PLEASE HELP! I AM TAKING A TEST
On a bicycle Chain and Sprocket: Which of the following gear ratios will give you the most Torque at
the back tire?
Driver 6"; Driven 6"
O Driver 6"; Driven 4"
O Driver 6"; Driven 2.5"
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Answers

Answer:

2.5

Explanation:

If the IMA of a wedge is calculated to be 4.0 and the AMA of the same wedge is calculated to be 3.0, then what is the % efficiency of the wedge?

Answers

The efficacy of the wedge would be 80%

D. projectile
3. A
is the curved path a launched object takes as it moves
forward and accelerates downward.
A. parabola
B. rhombus
C. spheroid
D. torus
which ctatement about traiectory is true?

Answers

Answer: parabola

Explanation:

•Parabolic Trajectory:

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what is meant by engineering jobs ​

Answers

Answer:

Engineers work in a variety of fields to analyze, develop and evaluate large-scale, complex systems. This can mean and improve and maintaining current systems or creating brand new projects. Engineers will design and draft blueprints, visit systems in the field and manage projects.

engineering jobs are the profession of applying scientific principles to the design, construction, and maintenance of engines, cars, machines, etc. (mechanical engineering), buildings, bridges, roads, etc. (civil engineering), electrical machines and communication systems (electrical engineering), chemical plant and machinery (chemical engineering), or aircraft (aeronautical engineering)
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