Answer Happy

Can children be used to generate electricity? Consider turning a swing into an electric generator by building it out of conducting material such that it forms a conducting loop, as shown in the schematic diagram below. у ab х * Z L 2 w 3 The swing rotates around the line 1-4; the swinging motion is described by the time evolution of the angle between the swing and the vertical direction, (1) = A sin(or). For simplicity, we place the swing right on top of the magnetic North Pole, so that the magnetic field, which has magnitude B, points straight upwards. In your answers, enter o as "theta" and @ as "omega" (without the quotation marks). You must indicate multiplication with an asterisk ("*"). For example, A sin() is entered as "A+sin(omega*t)".
If the swing was located not at the magnetic North Pole, but close to the equator (where the magnetic field is approximately horizontal, pointing from North to South), which orientation of the swing would result in a voltage between points a and b that is always zero? O a. The swing's bottom edge points in the East-West direction, perpendicular to the magnetic field. O b. The swing's bottom edge points in the North-South direction, parallel to the magnetic field. O c. The swing's orientation does not matter, as it does not affect the voltage. Od. The swing's orientation does matter, but the bottom edge should point neither in the North-South nor East-West direction.