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y. 30 o. x. ½ m. A 100 N flower pot is hanging from the end of a 200 N beam 1 meter long. The situation is represented with a force diagram. The same situation is described mathematically: St = _100 N(1 m) _200 N (1/2 m) _ (1/2 m) sin 30.

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## A 100 N flower pot is hanging from the end of a 200 N beam 1 meter long. The situation is represented with a force diagr

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**y**30o x ½ m A 100 N flower pot is hanging from the end of a 200 N beam 1 meter long.The situation is represented with a force diagram. The same situation is described mathematically: St= _100 N(1 m) _200 N (1/2 m) _ (1/2 m) sin 30 What are the missing signs in this statement? 1 + – – 2 – – – 3 – – + 4 + + + 5 + – +**A**B C D A block hangs on a massless meter stick supported by two scales. The situation is described mathematically: SFy= 0 = Tleft support on beam + Tright support on beam – Fblock string on beam St= F block string on beam (1/4 L) – Tright support on beam L = 0 Construct a picture and describe where this block would need to be placed. A student’s picture is shown with one block in the correct position. Which block is that? 1 A, located at 1 / 4 m to the right 2 B, located at 1 / 3 m to the right 3 C, located at 1 / 2 m to the right 4 D, located at 3 / 4 m to the right**The drawbridge at Camelot castle is used to help keep**invaders out. A group of invaders rapidly and the bridge is raised. One invader jumps on and holds on to the bridge. y 1 2 5 x 4 3 A student drew a free body diagram for the drawbridge. Identify the forces represented correctly. Construct a free body diagram for the drawbridge. 1 2, 4 2 1, 3, 4 3 2, 3, 4 4 1, 3, 5 5 2, 3, 5**30 cm**70 cm You are pushing down on one end of a balance. On the other end is a 1 kg object. The system is in equilibrium. Construct mathematical descriptions below to match the picture above. Which mathematical descriptions below match the picture above? a SFy = 0 = - 10N+ FHAND ON BOARD b SFy = 0 = - 10N- FHAND ON BOARD + FPIVOT ON BOARD c St= 0 = 10 N (30 cm) – FHAND ON BOARD(70 cm) d St= 0 = 10 N (30 cm) – FHAND ON BOARD(100 cm) • a, c 2 a, d • 3 b, c 4 b, d**A sign is hung on the side of a building as shown below.**Construct a force diagram of the sign that shows this situation. What force diagram shows this situation? 2 1 3**Four people, a defensive end for the scarlet knights, a**cheerleader, a 5 year old sports fan and a baby are all on a diving board at the local pool. The torque on the board due to each person is the same. What picture shows the position of the people to best match the above? Draw a picture that shows the position of the people to best match the above description. 1 2 4 3**A balance with moveable pans is shown in the picture below.**Which statement below is incorrect? 1 The location of the red boxes on the pans will make a difference in how the beam tilts. 2 The length of the rope connecting the pans to the balance will effect how the beam tilts. 3 If the block on the left is removed, then the two pans could still be balanced. 4 If the base is moved at an angle, then the pans will not balance.

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