Problem 3 A bead slides on a wire, which is in a vertical plane, as shown in the

Question

Problem 3 A bead slides on a wire, which is in a vertical plane, as shown in the diagram. Gravity acts in the -y direction. The bead starts at A, moving to the right with an initial velocity v. The wire is frictionless between A and D and between F and G, but there is friction between D and F. (For each statement select True, False, Greater than, Less than, Equal to, or Not enough information to tel The speeds at D and E are equal The bead's kinetic energy at B is.. its kinetic energy at F Between D and F, the speed decreases, then increases The total energy of the bead at B is.. the total energy at D

Explanation / Answer

1.TRUE

2.GREATER THAN

eventhough the heights are equal but at F friction is present so i think the KE at B is greater than at F.

3.FALSE.

Between D and F the path continusly slow down the despite friction increases the speed for entire path.

4.EQUAL

Before D no friction acts,so from law of conservation of energy total energy at B equal to total energy at D.

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