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Three forces A, B, C corresponding to three steel cables are acting on a joint, as shown. Force A=200N is described by (1) 0=45° which is a CCW rotation on the x-z plane from +x, and (2) an angle of depression d=55°. Force B=150N is on y-z plane; h = 2m and v = 5m. Force C = -100i-100j+100k N

Three forces A, B, C corresponding to three steel cables are acting on a joint, as shown. Force A=200N is described by (1) 0=45° which is a CCW rotation on the x-z plane from +x, and (2) an angle of depression d=55°. Force B=150N is on y-z plane; h = 2m and v = 5m. Force C = -100i-100j+100k N

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Three forces A, B, C corresponding to three steel cables are acting on a joint, as shown. Force A=200N is described by (1) 0=45° which is a CCW rotation on the x-z plane from +x, and (2) an angle of depression p=55°. Force B=150N is on y-z plane; h = 2m and v = 5m. Force C = -100i-100j+100k N y B h 5. Which of the following steps is/are INCORRECT when getting the resultant of multiple concurrent forces in space? Consider x-y-z rectangular coordinates. Items below are NOT in succession. 5-1. Resolve the given forces into x-y-z rectangular coordinates. • 5-2. Compute the components of the resultant Rx, Ry, Rz by vector-adding all x components to get Rx, all y components to get Ry, and all z components to get Rz • 5-3. The magnitude of the resultant is taken as the square root of the sum of squares of Rx, Ry, Rz, and the direction is arctan(Ry/Rx) item 5-1 item 5-2 items 5-1 and 5-2 item 5-3
Transcribed Image Text:Three forces A, B, C corresponding to three steel cables are acting on a joint, as shown. Force A=200N is described by (1) 0=45° which is a CCW rotation on the x-z plane from +x, and (2) an angle of depression p=55°. Force B=150N is on y-z plane; h = 2m and v = 5m. Force C = -100i-100j+100k N y B h 5. Which of the following steps is/are INCORRECT when getting the resultant of multiple concurrent forces in space? Consider x-y-z rectangular coordinates. Items below are NOT in succession. 5-1. Resolve the given forces into x-y-z rectangular coordinates. • 5-2. Compute the components of the resultant Rx, Ry, Rz by vector-adding all x components to get Rx, all y components to get Ry, and all z components to get Rz • 5-3. The magnitude of the resultant is taken as the square root of the sum of squares of Rx, Ry, Rz, and the direction is arctan(Ry/Rx) item 5-1 item 5-2 items 5-1 and 5-2 item 5-3
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