Three blocks are connected by a weightless cord and rest on an inclined plane (Fig. P12.34a). Employing a procedure similar to the one used in the analysis of the falling parachutists in Example 9.11 yields the following set of simultaneous equations (free-body diagrams are shown in Fig. P12.34b): 519. 72 216. 55 108. 28 100a 50a R 25a R
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Apply the Gauss-Jordan to solve for acceleration a and the tensions T and R in the two ropes.
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- A 57.1 kg person jumps on the ground from a height of 1.42 m. If he lands stiffly (with his knee joints compressing by 0.500 cm). Calculate the force on the knee joint. Answer and provide with solutions a. 111916.00 N b. 16216.40 N c. 158920.72 N d. 1589.21 NThe slope of the 4.1 kN force F is specified as shown in the figure. Express F as a vector in terms of the unit vectors i and j. Assume a = 9, b = 3. Answer: F = (i it i j) KNX Exit full screen The appara tus ot thé' injured leg and at the same time provider the trac tron along the leg to the full weight Suppor 25 250 1It the leg to be suppar ted weighs 47.0N (a) What must be the weigh f of w (b) What trac tion force does this product along the leg? tem
- a. Because of the COVID 19 pandemic, a company in Ghana was contractedbyAIT to produce nose masks for distribution to students. This companyhas a belt drive facility that dispatches the nose masks from theproducing house to the packaging house. The mass of the normal forcebetween the belt and its driver wheel is 880kg. Show the steps whichwill be taken to determine the maximum force that can be transmittedwhen the belt is running at a constant speed. Assuming the dynamiccoefficient of friction is 0.77. What would be the work done and thekinetic energy in this instance, if the velocity is 20km/h and the distancebetween the producing house and the packaging house is 90 m?This problem concerns the concept of tension in a rope. Consider a rope subjected to a pulling force on its two ends as shown in (Figure 1). The rope is stationary. An arbitrary point P divides the rope into a left-hand segment L and a right-hand segment R. Figure wi L pull R 232 pull 1 of 3 Part A For segment R and segment L to hold together, they must exert forces on each other. What is the direction of the force exerted on segment R by segment L? View Available Hint(s) left right Submit Part B FLR Assume that segment R exerts a force of magnitude T' on segment L. What is the magnitude FLR of the force exerted on segment R by segment L? Give your answer in terms of T and other constants such as g. ► View Available Hint(s) = Submit % ΑΣΦ www ?A system comprised blocks, a light frictionless pulley, and connecting ropes is shown in the figure. The B block has a mass of 9.3 kg and is on a perfectly smooth horizontal table. The surfaces of the A block, which has a mass of 8.2 kg, are rough, with uk = 0.25 between the block and the table. If the C block with mass 9.9 kg accelerates downward when it is released, find its acceleration. A В C.
- a. Saif is going in his bike with an initial speed of 24.2 m/s and as he approaches a crane, the braking system abruptly brings the 223kg bike (rider mass included) to a speed of 4.3 m/s over a distance of 6.7m. Determine the braking force applied to his bike. b. A tow truck is experiencing 600 N tensional force in the cable and the cable makes a 60o angle with the horizontal, If the mass of the car is 2400 kg, calculate the acceleration with which it gets lifted? c. A Physics 1 student got confused by Newton’s laws and asks her teacher this question “Astronauts in outer orbit are weightless (or float) because there is no gravity there”. Is this true? If not, explain the mistake in this statement.b&Openvel ellumHMAC=13141246e870af52d9ff2eac3b336ad2#10001 山 ☆ What tension does his rope need to support? Mountaineers often use a rope to lower themselves down the face of a cliff (this is called rappelling). They do this with their body nearly horizontal and their feet pushing against the cliff (Figure 1). Suppose that an 77.6-kg climber, who is 1.97 m tall and has a center of gravity 1.1 m from his feet, rappels down a vertical cliff with his body raised 41.6° above the horizontal. He holds the rope 1.56 m from his feet, and it makes a 24.4° angle with the cliff face. Express your answer using two significant figures. ΑΣΦ 圈] ? T = Submit Request Answer Part B Find the horizontal component of the force that the cliff face exerts on the climber's feet. Express your answer using two significant figures. ? Þ3v DA FH N Submit Request Answer Part C Find the vertical component of the force that the cliff face exerts on the climber's feet. Express your answer using two significant figures.…Your cat "Ms." (mass 7.00 kg) is trying to make it to the top of a frictionless ramp 2.00 m long and inclined upward at 30.0 ° above the horizontal. Since the poor cat can't get any traction on the ramp, you push her up the entire length of the ramp by exerting a constant 100 N force parallel to the Part A If Ms. takes a running start so that she is moving at 2.40 m/s at the bottom of the ramp, what is her speed when she reaches the top of the incline? Use the work-energy theorem. ramp. m/s
- consider a bent rod supported by a roller at A and a pin at C and is acted upon by a downward force P = 50N. B. 30° 4. Which of the following force diagrams correctly shows the reactions at the supports? A B. 30° D B. B.Three forces act at point O as shown. Force F3lies in the x-y plane. Select the expression that denotes a unit vector in the direction of F1 . a. - 1/3 i - 2/3 j - 2/3 kb. - 1/3 i + 2/3 j + 2/3 kc. - 1/3 i + 2/3 j - 2/3 kd. - 1/3 i - 2/3 j + 2/3 k Determine the direction angles (α, B ,y ) for F₂ . a. (103ᵒ , 72.1ᵒ , 22.6ᵒ ) b. (103ᵒ ,108ᵒ , 22.6ᵒ )c. (76.7ᵒ , 72.1ᵒ ,157ᵒ ) d. (103ᵒ , 72.1ᵒ ,157ᵒ ) Determine the angle between F1 and F3 . a. 26.0ᵒ b. 132ᵒc. 90.0ᵒ d. 0Hi, I really appreciate you taking the time to help me out! John places a coin on a horizontal turntable with a rubber surface. The coin is 28 cm from the center of the circular table. He notices that the coin just begins to slip when the table rotates at 45 rpm (revolutions per minute). What is the coefficient of static friction between the coin and turntable?