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Constants A uniform bar has mass 0.0180 kg and is 30.0 cm long. It pivots without friction about an axis perpendicular to the bar at point a in (Figure 1). The gravitational force on the bar acts in the -y-direction. The bar is in a uniform magnetic field that is directed into the page and has magnitude 0.200 B. 4 Part A What must be the current I in the bar for the bar to be in rotational equilibrium when it is at an angle 35.0° above the horizontal? Use the fact that T=IBL² for a uniform bar of length I carring a current I in a magnetic field B. Express your answer with the appropriate units. Figure HA 20 ? < 1 of 1 > I = Value Units y X × Ө × B b х Submit Request Answer ▾ Part B For the bar to be in rotational equilibrium, should I be in the direction from a to b or b to a? Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help a X

Constants A uniform bar has mass 0.0180 kg and is 30.0 cm long. It pivots without friction about an axis perpendicular to the bar at point a in (Figure 1). The gravitational force on the bar acts in the -y-direction. The bar is in a uniform magnetic field that is directed into the page and has magnitude 0.200 B. 4 Part A What must be the current I in the bar for the bar to be in rotational equilibrium when it is at an angle 35.0° above the horizontal? Use the fact that T=IBL² for a uniform bar of length I carring a current I in a magnetic field B. Express your answer with the appropriate units. Figure HA 20 ? < 1 of 1 > I = Value Units y X × Ө × B b х Submit Request Answer ▾ Part B For the bar to be in rotational equilibrium, should I be in the direction from a to b or b to a? Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help a X

University Physics Volume 2
University Physics Volume 2
18th Edition
ISBN:9781938168161
Author:OpenStax
Publisher:OpenStax
Chapter11: Magnetic Forces And Fields
Section: Chapter Questions
Problem 108CP: A wire ismade into a circular shape of radius R and pivoted along a central support.The two ends of...
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Constants A uniform bar has mass 0.0180 kg and is 30.0 cm long. It pivots without friction about an axis perpendicular to the bar at point a in (Figure 1). The gravitational force on the bar acts in the -y-direction. The bar is in a uniform magnetic field that is directed into the page and has magnitude 0.200 B. 4 Part A What must be the current I in the bar for the bar to be in rotational equilibrium when it is at an angle 35.0° above the horizontal? Use the fact that T=IBL² for a uniform bar of length I carring a current I in a magnetic field B. Express your answer with the appropriate units. Figure HA 20 ? < 1 of 1 > I = Value Units y X × Ө × B b х Submit Request Answer ▾ Part B For the bar to be in rotational equilibrium, should I be in the direction from a to b or b to a? Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help a X
Transcribed Image Text:Constants A uniform bar has mass 0.0180 kg and is 30.0 cm long. It pivots without friction about an axis perpendicular to the bar at point a in (Figure 1). The gravitational force on the bar acts in the -y-direction. The bar is in a uniform magnetic field that is directed into the page and has magnitude 0.200 B. 4 Part A What must be the current I in the bar for the bar to be in rotational equilibrium when it is at an angle 35.0° above the horizontal? Use the fact that T=IBL² for a uniform bar of length I carring a current I in a magnetic field B. Express your answer with the appropriate units. Figure HA 20 ? < 1 of 1 > I = Value Units y X × Ө × B b х Submit Request Answer ▾ Part B For the bar to be in rotational equilibrium, should I be in the direction from a to b or b to a? Drag the terms on the left to the appropriate blanks on the right to complete the sentences. Reset Help a X
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