5.000 cm 60.00 cm 9.500 cm +o - 40.00 cm (b) Two thin, flat metal plates are positioned vertically, 40.00 cm apart. The left plate has a charge density of o = +820.0 mC/m² and the right plate has an equal but opposite charge density, –o = -820.0 mC/m². There are also two thin, flat metal plates positioned horizontally, 60.00 cm apart, with the top plate given a negative charge, and the bottom plate given an equal but opposite positive charge, such that the potential difference between the plates is 10.00 V. A small sphere with mass m = 57.78 g, and charge q = +34.00 mC is attached to a thin, rigid, massless, insulating rod with length L = 16.00 cm, which is pivoted at point 0, which is 5.000 cm from the left plate. The sphere/rod unit is rotated to an angle of 10.00° with the horizontal and released from rest. (b) A negative charge of Q = –132.0 mC is now fixed at a point which is at the same height as point 0, and 9.500 cm to the left of the right plate. (Not to scale.) A negative charge of Q = -132.0 mC is now fixed at a point which is at the same height as point 0, and 9.500 cm to the left of the right plate, as shown in Fig.-1b. The sphere/rod unit is again rotated to an angle of 10.00° with the horizontal and released from rest, will it now ever reach an angle of 0° with the horizontal? What will be the speed of the sphere when it gets there?

5.000 cm 60.00 cm 9.500 cm +o - 40.00 cm (b) Two thin, flat metal plates are positioned vertically, 40.00 cm apart. The left plate has a charge density of o = +820.0 mC/m² and the right plate has an equal but opposite charge density, –o = -820.0 mC/m². There are also two thin, flat metal plates positioned horizontally, 60.00 cm apart, with the top plate given a negative charge, and the bottom plate given an equal but opposite positive charge, such that the potential difference between the plates is 10.00 V. A small sphere with mass m = 57.78 g, and charge q = +34.00 mC is attached to a thin, rigid, massless, insulating rod with length L = 16.00 cm, which is pivoted at point 0, which is 5.000 cm from the left plate. The sphere/rod unit is rotated to an angle of 10.00° with the horizontal and released from rest. (b) A negative charge of Q = –132.0 mC is now fixed at a point which is at the same height as point 0, and 9.500 cm to the left of the right plate. (Not to scale.) A negative charge of Q = -132.0 mC is now fixed at a point which is at the same height as point 0, and 9.500 cm to the left of the right plate, as shown in Fig.-1b. The sphere/rod unit is again rotated to an angle of 10.00° with the horizontal and released from rest, will it now ever reach an angle of 0° with the horizontal? What will be the speed of the sphere when it gets there?