test094p3

test094p3 - F~D FIGURE 2 C 12) 12) When you ride a bicycle,...

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Unformatted text preview: F~D FIGURE 2 C 12) 12) When you ride a bicycle, in what direction is the angular velocity of the wheels? A) backwards up C) to your left ~ ) forwards E) to your right /' ~ 1L '6 5 f:::;- () T i~ k- mg}.:=:-o (9 ,5 2 T-==- 13) A store's sign, with a mass of 20.0 kg and 3.00 m long, has its center of gravity at the center of the sign. It is supported by a loose bolt attached to the wall at one end and by a wire at the other end, as shown in Figure 2. The wire makes an angle of 25.0° with the horizontal. What is the tension in the wire? ~\ A) 464N B) 297N C) 196N ~ E) 116N 13) n:::J.. FIGURE 3 / 1 kg 6:\ 180 r(1 ~ )30m "k ~~/ ,'.~ / 14) The L-shaped object shown in Figure 3 consists of the masses connected by massless rods. );low much work must be done to accelerate the object from rest to an angular speed of 3.25 raMs about the x-axis? A) 62.3 J \ B) 23.7 J C) 47.4 J ~ E) 17.6 J USQ I., -_ vv II.)()I' l:. -eYlCf"S> 1<: __ P W~ ~ 'r' (, I t/;O(lVUY'7 _ ~ AJr .L-:r: '1. - (Z(YJIY~) W!~ ~ . L I /.:-(I){t.9) /")/71.w 3 D 0 J-.:t .l- 14) 2- L (.ur) -= ?,£U ~ ...
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