Question

Hi could someone please help me with these questions. Also, could you write the steps clearly so I understand how you got the answers. Thanks in advance!

FORMULAS W Weight Finding magnitude of diagonal Resultant Finding direction of diagonal resultant mass x g Resultant Square root (opposite? + adjacent) tan (opposite/adjacent) 1. 4 people are having a tug-o-war. The 2 people on the left side pull with forces of 90N and 60N, respectively. The 2 people on the right side pull with forces of 105N and 45N, respectively. a. Draw a free body diagram b. What kind of forces are these? What is the net force pulling on the rope? Show all work! Which side wins? Defend your answer c. d. You and your roommate decide to move your couch. The front of the couch is currently facing west. You push on the back of the couch with a force of 350N. Your roommate pushes on the south end of the couch with a force of 200N. 2. a. Draw a free body diagram b. What kind of forces are these? What is the net force (resultant) of both of your efforts? c. What is the direction (angle) of the resultant (degrees, plus cardinal direction) d. You have just jumped off the high dive and are falling towards the water. Using biomechanics terminology discussed in class, explain why waving your arms and legs around won't stop you from getting wet. 3.

Answer 1

Answer 2

F.B.D (a) (b) These force are Linear external agent forces, which will create the Tension force in the rape if we take left side (c) LHS force = RHS force (60 + 90) = (105 + 45) 150 N = 150 N So the net force pulling on the rope is zero. work done by all the forces is zero, As there is no displacement. \r\n (d) As force are in equilibrium position so No one will using. The Tug-o-war will tie. (2) (a) as current of the couch facing west (b) These are the external agent forces which will create the friction force between the couch and surface. (c) R = squareroot A^2 + B^2 + 2AB cos c Here theta = 90 degree R = squareroot A^2 + B^2 R = squareroot (350)^2 + (200)^2 R = 403.11 N \r\n (d) tan theta = 209/350 = 4/7 theta = tan^-1 4/7 = 2968 degree Cardinal Cardinal direction = North of west at 29.68 degree