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    Physics:At what angle should a curve of radius 115 m be banked, so cars can travel

    safely at 23 m/s without...? At what angle should a curve of radius 115 m be banked, so cars can travel safely at 23 m/s without relying on friction? Ive been trying this one i thought it was tan ? = v^2 /rg but it isnt can some one plz help
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