Answer:
The efficiency of the pulley, % Efficiency is [tex]69.\overline 4[/tex]%
Explanation:
The given parameters in the question are;
The mass of the actress playing Peter Pan (the pulley load) = 125 lb
The force applied to hoist the actress by the stage hand = 30 lbs
The actual mechanical advantage, AMA = Load/Force applied
Therefore, the AMA of the pulley = 125 lbs/(30 lbs) = 25/6 = [tex]4.1 \overline 6[/tex]
The pulley's Ideal mechanical advantage, IMA = The number of stands in the pulley = 6
The efficiency of a pulley is given by the following formula;
[tex]\% \ Efficiency = \dfrac{AMA}{IMA} \times 100[/tex]
Where
AMA = The actual mechanical advantage
IMA = The ideal mechanical advantage
Therefore, the efficiency of the pulley, % Efficiency, is given by plugging in the values of the AMA and the IMA in the efficiency formula as follows;
[tex]\% \ Efficiency = \dfrac{\dfrac{25}{6} }{6} \times 100 = \dfrac{625}{9}\% = 69.\overline 4\%[/tex]
The efficiency of the pulley, % Efficiency = [tex]69.\overline 4[/tex]%
Type the correct answer in the box. Spell all words correctly. Elaine is an engineer. She has to create a prototype of a machine. To do this, she uses a technique where the production time of the prototype is reduced considerably with the help of a fast generation of 3D models. Which technique did she use? Elalne used the technique where the production time of the prototype is reduced considerably with the help of a fast generation of 3D models.
Answer:
the mean time I was wondering if you have any questions or need any further information please contact me at the mean time I was
Technician A says power steering pumps can be engine driven. Technician B says power steering
pumps can be electrically driven. Who is correct?
Select one:
A. Technician A
B. Technician B
C. Both A and B
D. Neither Anor B
Answer:
The correct option is;
C. Both A and B
Explanation:
Power steering supplies power more steering power when a driver turns the wheel to leverage the input steering effort of the driver thereby providing more steering with small effort
The power steering pumps which supply the power that to the fluid that eases steering of the wheel can be driven by the engine through a belt and pulley system or it can be installed in the front of the vehicle and from there, electrically driven alongside the refrigerant compressor
Therefore, both Technician A and Technician B are correct
If f(
[tex]x[/tex]
) =
[tex]81 {x}^{2} [/tex]
[tex]0 < x < \frac{1}{3} [/tex]
[
[
find the E (
[tex]x[/tex]
) and var(a)