catus: D C=D QUESTION 27 The figure shows a rigid structure consisting of a circular hoop of radius R and mass m, and a square made of four thin bars, each of length R and mass m. The rigid structure rotates at a constant speed about a vertical axis, with a period of rotation of 2.0 s. If R = 0.2 m and m= 3.7 kg, calculate the angular momentum about that axis. The total rotational inertia of the object is: 196 m R2 Rotation axis & OA 1.47 kg.m²/s OB.4.43 kg.m²/s OC. 1.12 kg.m²/s OD.2.99 kg.m²/s OE. 3.42 kg.m²/s swers to save all answers.

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Chapter1: Units, Trigonometry. And Vectors
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catus:
D
C=D
QUESTION 27
The figure shows a rigid structure consisting of a circular hoop of radius R and mass m, and a square made of four thin bars, each of length R and mass m. The rigid
structure rotates at a constant speed about a vertical axis, with a period of rotation of 2.0 s. If R = 0.2 m and m=3.7 kg, calculate the angular momentum about that
axis.
The total rotational inertia of the object is: 196 m R2
Rotation axis
&
OA. 1.47 kg.m²/s
OB.4.43 kg.m²/s
OC. 1.12 kg.m²/s
OD.2.99 kg.m²/s
OE. 3.42 kg.m²/s
wers to save all answers.
Transcribed Image Text:catus: D C=D QUESTION 27 The figure shows a rigid structure consisting of a circular hoop of radius R and mass m, and a square made of four thin bars, each of length R and mass m. The rigid structure rotates at a constant speed about a vertical axis, with a period of rotation of 2.0 s. If R = 0.2 m and m=3.7 kg, calculate the angular momentum about that axis. The total rotational inertia of the object is: 196 m R2 Rotation axis & OA. 1.47 kg.m²/s OB.4.43 kg.m²/s OC. 1.12 kg.m²/s OD.2.99 kg.m²/s OE. 3.42 kg.m²/s wers to save all answers.
65 minutes, 59 seconds.
Status:
9.m²/s
QUESTION 28
A wheel, with rotational inertia I, mounted on a vertical shaft with negligible rotational inertia, is rotating with angular speed w, A nonrotating wheel with rotational inertia 21 is
suddenly dropped onto the same shaft. The resultant combination of the two wheels and shaft will rotate at:
OA.2W
OB. w/2
OC.3W
OD.w/3
OE. W/4
QUESTION 29
For a body to be equilibrium under the combined action of several forces:
O A. the lines of action of all the forces must pass through the center of gravity of the body
OB. any two of these forces must be balanced by a third force
OC. all the forces must be applied at the same point
OD. the sum of the components of all the forces in any direction must equal zero
O E. all of the forces are composed of pairs of equal and opposite forces
90
Transcribed Image Text:65 minutes, 59 seconds. Status: 9.m²/s QUESTION 28 A wheel, with rotational inertia I, mounted on a vertical shaft with negligible rotational inertia, is rotating with angular speed w, A nonrotating wheel with rotational inertia 21 is suddenly dropped onto the same shaft. The resultant combination of the two wheels and shaft will rotate at: OA.2W OB. w/2 OC.3W OD.w/3 OE. W/4 QUESTION 29 For a body to be equilibrium under the combined action of several forces: O A. the lines of action of all the forces must pass through the center of gravity of the body OB. any two of these forces must be balanced by a third force OC. all the forces must be applied at the same point OD. the sum of the components of all the forces in any direction must equal zero O E. all of the forces are composed of pairs of equal and opposite forces 90
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