Q1 an iron bolt of mass 634 g hangs from a string 326 cm, Ask an Expert

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Q1. An iron bolt of mass 63.4 g hangs from a string 32.6 cm long. The top end of the string is fixed. Without touching it, the magnet attracts the bolt so that it remains stationary, displaced horizontally 28.5 cm to the right from the before vertical line of the string. Find the tension in the string. Find the magnetic force on the bolt.

Q2. An airplane must reach a speed of 190 mi/h to take off. If the runway is 466 m long, what is the minimum value of an acceleration that will allow the airplane to take off successfully?

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