ENG1014 - Engineering Numerical Analysis - S1_2023 Question 16-18
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ENG1014 - Engineering Numerical Analysis - S1_2023
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A car wheel has 5 struts equally spaced between the rim and the centre.
The wheel has a diameter of 0.8 m. The rim has a mass of 2.6 kg and can be modeled as a thin ring. Each strut has a mass of 0.6 kg and these can be modeled as thin rods with length stretching from the centre to the inside of the rim. The wheel can be modelled as the ring + 5 struts. Calculate the total moment of inertia for the wheel, in kg.m2. |
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a. 2.30 b. 0.45 c. 0.46 d. 1.06 e. 0.37 f. 0.42 g. 0.16 h. 0.58 |
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If a ball with a coefficient of restitution of e = 0.7 is released from a height of 0.8 m, then, neglecting air resistance and any other sources of energy loss, the ball will bounce to a peak height after one bounce of... ○ a. 0.2400 0 b. 0.5600 ○ c. 0.4915 0 d. 0.3920 ○ e. 0.4080 0 f. 0.6561 0 g. 0.5062 0 h. 0.3612 |
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A set of measurements of the ulƟmate tensile strength (UTS) of a new aluminium alloy gives an average of 574.16 MPa with an associated uncertainty of ± 11.56 MPa. How should you report this finding? ○ a. UTS = 570 ± 10 MPa. 0 b. UTS = 574 ± 10 MPa. ○ c. UTS = 574.16 ± 12 MPa. 0 d. UTS = 574.16 ± 11.56 MPa. ○ e. UTS = 574.16 MPa. 0 f. UTS = 574 ± 11.6 MPa. ○ g. UTS = 570 MPa.
0 h. UTS = 570 ± 12 MPa. |
2023-08-01