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Statement of a problem № 2570

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As shown in Fig. 9-4, a 20-g bead slides from rest at A along a frictionless wire. If h is 25 cm and R is 5.0 cm, how large a force must the wire exert on the bead when it is at (a) point B and (b) point D?

Solution:
As shown in Fig. 9-4, a 20-g bead slides from rest at A along a frictionless wir

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