eter rule is anchored at the point O and is ough O and perpendicular to the plane of of equal magnitudes act on the ruler at diff te is 24.0 N and 0 =30°. The distances alon ntities are correct to 3 significant figures.

Elements Of Electromagnetics
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Author:Sadiku, Matthew N. O.
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ChapterMA: Math Assessment
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Please help with the last part of (f). It is not 0.600.

A meter rule is anchored at the point O and is free to rotate about an axis passing
through O and perpendicular to the plane of the meter rule. Forces F1, F2, F3, F4 and
F5 of equal magnitudes act on the ruler at different locations. The magnitude of each
force is 24.0 N and 0 =30°. The distances along the ruler are given in cm. Assume all
quantities are correct to 3 significant figures.
O
F₁
TFA
= -12.5
-14.4
(a) Determine whether each force can or cannot rotate the ruler and select the correct
rationale for your answer.
F₁ No, because it is on th✔ ✔
30
1,F3
I
F₂ Yes
F3 Yes
F4 Yes
F5 No, because the force ✔ ✔
(b) Between F3 or F4 which force produces a larger torque?
F3 - because it is perpe î
(c) Calculate the torques produced by F3 and F4, including the sign of the torque
indicating the sense of rotation, positive for counter-clockwise rotation and negative
clockwise rotation.
= .600
r1,F₁
0
-6.24
î
Help: When using the formula for torque, the angle is between the tails of which two
vectors? Draw a diagram showing the vectors and to figure out the angle to be used
in the calculations of torque.
Enter to 3 significant figures
TF3
=
600 X 10
î
◆
(d) Between F₂ and F4 which force produces the larger torque is
Nm
60
Nm
0
F4 - because it has a la V.
(e) Calculate the torque produced by F2, including the sign of the torque indicating the
sense of rotation - positive for counter-clockwise rotation and negative clockwise
rotation.
Enter to 3 significant figures
F4
TF₂
(f) Calculate the moment arms of F3 and F4. Note: Moment arms are distances and
positive.
Enter to 3 significant figures
Nm
100
F5
-3√
Transcribed Image Text:A meter rule is anchored at the point O and is free to rotate about an axis passing through O and perpendicular to the plane of the meter rule. Forces F1, F2, F3, F4 and F5 of equal magnitudes act on the ruler at different locations. The magnitude of each force is 24.0 N and 0 =30°. The distances along the ruler are given in cm. Assume all quantities are correct to 3 significant figures. O F₁ TFA = -12.5 -14.4 (a) Determine whether each force can or cannot rotate the ruler and select the correct rationale for your answer. F₁ No, because it is on th✔ ✔ 30 1,F3 I F₂ Yes F3 Yes F4 Yes F5 No, because the force ✔ ✔ (b) Between F3 or F4 which force produces a larger torque? F3 - because it is perpe î (c) Calculate the torques produced by F3 and F4, including the sign of the torque indicating the sense of rotation, positive for counter-clockwise rotation and negative clockwise rotation. = .600 r1,F₁ 0 -6.24 î Help: When using the formula for torque, the angle is between the tails of which two vectors? Draw a diagram showing the vectors and to figure out the angle to be used in the calculations of torque. Enter to 3 significant figures TF3 = 600 X 10 î ◆ (d) Between F₂ and F4 which force produces the larger torque is Nm 60 Nm 0 F4 - because it has a la V. (e) Calculate the torque produced by F2, including the sign of the torque indicating the sense of rotation - positive for counter-clockwise rotation and negative clockwise rotation. Enter to 3 significant figures F4 TF₂ (f) Calculate the moment arms of F3 and F4. Note: Moment arms are distances and positive. Enter to 3 significant figures Nm 100 F5 -3√
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