Question

A bead slides at constant speed along a curved wire lying on a horizontal surface as shown in the figure Suppose the bead speeds up with constant tangential acceleration as it moves toward the right. Draw the vectors representing the force on the bead at points A B, and C

Answer 1

As the bead is accelerating linearly as well as experiencing centripetal acceleration also at curved points and where there is an acceleration, there is a force, hence at straight track, there is only a tangential force due to a tangential acceleration, but at curves, there are two force, tangential (giving the tangential acceleration) and centripetal (giving the centripetal acceleration). Than at curves there is a vector sum of these two forces.

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