A uniform non-conducting rod of mass m and length ℓ has uniform charge density λ. It rotates with constant angular speed ω in a gravity-free region containing a uniform magnetic field B.
Physics · Electromagnetic Induction
A uniform non-conducting rod of mass m and length ℓ has uniform charge density λ. It rotates with constant angular speed ω in a gravity-free region containing a uniform magnetic field B.

Sub-question 1
Taking the origin at one end of the rod, which graph represents the magnitude of tension T versus distance along the rod?
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Sub-question 2
The ratio of tension magnitudes at distances ℓ/2 and 3ℓ/4 from one end is:
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