A force Fa is applied to a bead as the bead is moved along a straight wire through displacement + 5.0cm. The magnitude of Fa is set at a certain value, but the angle ? between Fa and the bead??s displacement can be chosen. Figure gives the work W done by Fa on the bead for a range ? values; W0 = 25J. How much work is done by Fa if ? is?(a) 64o and(b) 147o?

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Wor