The mass m 1 kg is set up as a pendulum of length 0.6m as, Ask an Expert

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Q1. Two long parallel wires 20 cm apart carry currents of 5 A and 8 A in the same direction. Is there any point between the two wires where the magnetic field is zero?

Q2. The mass m =1 kg is set up as a pendulum of length 0.6m as shown on the diagram. Initially in the position of h = 0.2m above the lowest point, and the pendulum is given initial speed of 1m/s. What is the largest mass M that might be temporarily lifted in such setup?

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