8.0 N F 25 cm What magnitude of force, F, needs to be applied at an angle 0= 48 degrees if the bar is to be in rotational equilibrium? Give your answer in Newtons to 2 significant figures (1 decimal in this case). 75 cm
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- The forces are in static equilibrium. The 140 lb force is directed along the x-axis and the 300 lb force is directed along the negative z-axis. What is the angle between R and the z-axis? Provide your answer in degrees, but do not include units in your answer. Z X R ex лог 140lb A 1-50, 80, 160) lb By 300 lb YThe cable AB prevents bar OA from rotating clockwise about the pivot O. If the cable tension is 740 N, determine the n- and t- components of this force acting on point A of the bar. 1.6 m B Answers: Tn' i 9 Tt= i II = 1.2 m 61° N NQ.4) The tensile force in cable AB has a magnitude of 80 lb. The cable is attached to a collar at A that slides on bar CD. Neglect the weight of collar A. (a) Determine the Cartesian coordinates of point A. (b) Express the tensile force in cable AB as a Cartesian vector and find its components along rod CD and perpendicular to it. X B 6 ft. 3 ft. -4 ft. Z 6 ft. T 5 ft. A y
- y T F х F, An object is subjected to three forces as shown in the figure. Assume F1 = 80.0 N and F2 = 95.0 N, what is T if the object is in static equilibrium? Enter a number with three significant digits.a) Cables AC and BC are connected to lifting points A & B, and joined together at C as shown in Figure Q1a. The angle = 200 and angle B = 50°. If the tension in each cable is 3.75 KN, calculate the force (F) and the angle a required to maintain point C in static equilibrium. Give your answers for F in kilonewtons (kN) and the angle a in degrees to two decimal places. A 3 F α B OThe cable AB prevents bar OA from rotating clockwise about the pivot O. If the cable tension is 820 N, determine the n- and t- components of this force acting on point A of the bar. A 2.0 m B Answers: Tn= i Tt= i 1.6 m 74° N N
- Y Figure Fw 40° CG Ymg FT 1 of 1 Calculate the tension Fr in the wire that supports the 42 kg beam shown in the figure(Figure 1). Express your answer using two significant figures. Fr= 320 N Submit ✓ Correct Part B Calculate the magnitude of the force Fw exerted by the wall on the beam. Express your answer using two significant figures. Fw: || Previous Answers Submit Part C VO ΑΣΦ A Request Answer Ċ ? N8₁ 02 9. The diagram of the leg shows the femur (1) and tibia (2). The quadriceps muscle (3) applies a force to the lower leg via a tendon (4) that is embedded with the kneecap (5). If the force applied by the muscle to the tendon is F 570 N, what is the force of the femur on the kneecap, if the leg is in equilibrium? A simplified model of the leg is shown next to the diagram. The leg bones are represented by two beams attached by a pin. The tendon is modelled by a rope and the kneecap acts like a pulley. The tendon above the kneecap makes an angle 8, = 38° with respect to the vertical, and the portion of the tendon below the kneecap makes an angle of 6₂ = 10° with respect to the vertical. Enter the x component, followed by the y component. Answer 1 of 2: Answer 2 of 2: Submit All AnswersThere are four forces acting on a pole, A = 10i N, B = 20j N, C = -30j N, D = -40i N. What should be the magnitude of force E that must be exerted on the pole to maintain static equilibrium?
- Directions: Assume, unless otherwise specified, that all numbers have at least 3 significant figures. F (N) Students collect data, see graph, for the force involved in stretching a rubber band. The data is well fit by the equation F = 33.65 x0.4971, 12 10 where F is in newtons and x is in meters. One end of the rubber band is attached to a stationary vertical rod and the other end to a 0.3 kg mass. The mass rests on a frictionless horizontal surface. The mass is pulled back such that the rubber band is stretched by 0.8 m from its unstretched length and then released from rest. 4. x (m) 0,1 0.02 0.04 0.06 0.08 A. What is the speed of the mass after it has traveled 0.4 m? B. What is the maximum speed of the object?The cable AB prevents bar OA from rotating clockwise about the pivot O. If the cable tension is 680 N, determine the n- and t- components of this force acting on point A of the bar. TL B Answers: Tn= Tt= i Submit Answer Attempts: 0 of 1 used -1.9 m Save for Later 0 53° 2.4 m N NCable AB passes over the small ideal pulley C without a change in its tension. What length of cable CD is required for static equilibrium in the position shown? What is the tension Tin cable CD? A 42° D 2.7' 76 Ib Answers: LCD = i ft TCD = i Ib