(1 Point) You decide to remake the shaft in problem 3 with Cold-Drawn AISI 1010 Steel. Calculate the endurance limit for the shaft. You can assume the temperature factor is equal to one. The shaft needs to be 90% reliable, and it has a key slot machined into it to hold the gear. Report your answer in kpsi rounded to one decimal place. The shaft characteristics are as follows: Length – 20 in; Diameter – 1in;

(1 point) A single threaded square thread power screw has a major diameter of 64 mm and a pitch of 6 mm. There is a 10 kN load applied to the top of the screw. There is a 80 mm collar on the screw. The coefficient of friction is 0.12 for all materials. What is the torque required to raise the load? Report your answer in Nm to one decimal place.

Compute the following integral: ∫ ( 5 t 2 − 1 + 4 t 2 ) d t {“version”:”1.1″,”math”:”\int\left(\frac{5}{t^2}-1+4t^2\right)\,dt”} Select an option from below:

Compute the following integral: ∫ sec ⁡ θ ( tan ⁡ θ + sec ⁡ θ + cos ⁡ θ ) d θ {“version”:”1.1″,”math”:”\int\sec\theta(\tan\theta+\sec\theta+\cos\theta)\,d\theta”} Select an option from below:

This last question culminates the exercise to connect the Riemann sum and the Fundamental Theorem of Calculus (3/3): Use the Fundamental Theorem of Calculus to check your answer from the previous question, question 7: f ( x ) = x 3 + 1 {“version”:”1.1″,”math”:”f(x)=x^3+1″}for 0 ≤ x ≤ 3. Select an option from below:

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(1 point) A circular idler shaft has a single gear at its center, which exerts a force of 45 lbs on the shaft.  What is the maximum critical speed of the shaft due to this external loading? Use Dunkerley’s equation for estimating the critical speed. Report your answer in revolutions per minute to one decimal place. The shaft characteristics are as follows: Length – 20 in; Diameter – 1in; Young’s Modulus – 30,000 kpsi; Specific mass,

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Compute the following integral: ∫ 0 1 y ( y 2 + 1 ) 5 d y {“version”:”1.1″,”math”:”\int_0^1 y(y^2+1)^5\,dy”} Select an option from below:

A car starting at rest accelerates at 16 ft/s² for 5 seconds on a straight road. How far does the car travel during this time? Select an option from below: