Which makes the pendulum swing upward in an arc

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Q. Two identical piano wires have a fundamental frequency of 640 Hz when kept under the same tension. What fractional increase in the tension of one wire will lead to the occurrence of 10 beats/s when both wires oscillate simultaneously?

Q. An 18 g rifle bullet traveling 220 m/s buries itself in a 4.0 kg pendulum hanging on a 2.7 m long string, which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum's displacement.

Reference no: EM1361541

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