Suppose you use an ideal pulley of the type shown in the figure below and find it necessary to exert a force of 210 N to support a load. MA 3 TTT (a) What is the load's mass (in kg)? kg (b) What force (in N) is exerted on the ceiling? Neglect the pulley system's mass. N (upward)
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- F. y M. mg AF FY f.Y Fixle Axis The ladder in the picture has a mass of 39 kilograms and a length 3.4 meters. What is the normal force pushing the ladder up from the floor? This force is labeled Ff v in the picture. FN Assume that the ladder's weight is evenly distributed, so it can be treated as a single force through the middle. If the ladder is at a 70° angle from the ground, what is the torque exerted by the weight (using the floor as the pivot point)? N.m The torque from the ladder must be balanced by the torque caused by the normal force on the wall, labeled Fw in the picture. Calculate this force. Fw = The normal force from the wall must be balanced by the friction force from the floor, labeled Ff y in the picture Determine thnHow do you do this? A hungry bear weighing 700 N walks out on a beam in an attempt to retrieve a basket of goodies hanging at the end of the beam (see figure below). The beam is uniform, weighs 200 N, and is 6.00 m long, and it is supported by a wire at an angle of ? = 60.0°. The basket weighs 80.0 N. a) When the bear is at x = 1.00 m, find the tension (in N) in the wire supporting the beam and the components of the force exerted by the wall on the left end of the beam. b) If the wire can withstand a maximum tension of 875 N, what is the maximum distance (in m) the bear can walk before the wire breaks?Three bamboo poles anchored at points B, C, and D on the ground supports the TV antenna placed at their other end at Point A. The TV antenna with a negligible weight is subjected to a wind load equivalent to a force in the component form shown in the figure. Y (-45î + 45K)N (0,8,0) A B (-6,0,2.4) (0,0,0) C D (0,0,-12) (8,0,4) *
- 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 uniform diving board has a mass of 26 kg. Find the force on the support A when a 69 kg diver stands at the end of the diving board. E 09 m + 3.6 m AA vaulter is holding a horizontal 3.00-kg pole, 4.50 m long. His front arm lifts straight up on the pole, 0.750 m from the end, and his back arm pushes straight down on the end of the pole. How much force does his front arm exert on the pole? [?]N
- A diving board of length 3.00 m is supported at a point 1.00 m from the end, and a diver weighing 550 N stands at the free end (Figure 1). The diving board is of uniform cross section and weighs 270 N. For related problemealing ting and strateginn Figure K-1.00 m- -2.00 m 1 of 1 ▼ Part A Find the magnitude of the force at the support point. Express your answer in newtons. VG ΑΣΦ Fsupport Submit Part B = Request Answer ? NConsider the 120-cm board supporting three loads as shown below. The beam weighs 45 grams. If the system is in equilibrium, a. what is the magnitude of the force exerted by the pin support to the board? b. Find the perpendicular distance, x, of the pin support from the left end of the board. 30cm A В C 259 30g 75gAfter an unfortunate accident occurred at a local warehouse, you were contracted to determine the cause. A jib crane collapsed and injured a worker. An image of this type of crane is shown in the figure. The horizontal steel beam had a mass of 90.20 kg per meter of length, and the tension in the cable was T = 12820 N. The crane was rated for a maximum load of 500 kg. The acceleration due to gravity is g = 9.810 m/s². 2.250 m, 0.594 m, x = 1.250 m, and h = If d = 5.290 m, s = what was the magnitude of W₁ (the load on the crane) before the collapse? What was the magnitude of force Fp at the attachment point P? h W₁ = Fp = d 0 W₁ L 1 N N
- Learning material says that the answer is Ff = 244.29 N, but it didn't show how to get that answer. Other answers found on this site say it's 1646.45 N. Which one is the wrong answer? How is it wrong? Please enlighten me. Thank you.+ A uniform ladder stands on a rough floor and rests against a frictionless wall as shown in the figure. Since the floor is rough, it exerts both a normal force N, and a frictional forcef, on the ladder. However, since the wall is frictionless, it exerts only a normal force N₂ on the ladder. The ladder has a length of L = 4.2 m, a weight of W, = 66.5 N, and rests against the wall a distance d = 3.75 m above the floor. If a person with a mass of m= 90 kg is standing on the ladder, determine the following. (a) the forces exerted on the ladder when the person is halfway up the ladder (Enter the magnitude only.) N₂ N₂- 4- (b) the forces exerted on the ladder when the person is three-fourths of the way up the ladder (Enter the magnitude only.) N₂ N₂ Additional MaterialsTo run Slap-chop and use Sham-wow you need to be in shape. For a work out, the man in the figure uses a device consisting of four springs arranged as shown. Each spring has a spring constant of 75.5 N/m. The hands holding the unstretched device are 36.34 cm apart. If the person can extend the springs to 61.87 cm apart, what is the maximum lateral force exerted by each hand?