An iron bolt of mass 700 g hangs from a string 352 cm long, Ask an Expert

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An iron bolt of mass 70.0 g hangs from a string 35.2 cm long. The top end of the string is fixed. Without touching it, a magnet attracts the bolt so that it remains stationary, displaced horizontally 20.0 cm to the right from the previously vertical line of the string.

(a) Find the tension in the string.

(b) Find the magnetic force on the bolt.

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