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- A uniform 25kg bar, 6.0m long is suspended by a cord shown. What is the tension in the cord? wall cord 27° -6.0 m- 3.7 x 102 N 02.7 x 10² N 1.2 x 10² N 5.4 x 10² N8:26 2. Use three decimal places and set your calculator in the 3. Enclosed the final answers in a rectangular box. ILIBRE NYO KO PROBLEM OI. 300KN box resting on an inclined surface is held in position by a force P acting as shown. If the angle of friction between the contact surfaces is 10°, determine the maximum and minimum values of this force P to maintain equilibrium. 300KN BOX P 15⁰ MoreRunning on a treadmill is slightly easier than running outside because there is no drag force to work against. Suppose a 60 kg runner completes a 5.0 km race in 15 minutes. Determine the drag force on the runner during the race. Suppose that the cross-section area of the runner is 0.72 m2. What is this force as a fraction of the runner's weight?
- . Asiacell ? 8:10 PM 38% O اسئلة الامتحان الثال. . . University of Technology Mechanical Engineering Department 2020-2021 Subject: Physics1 Class: First Year Division: power plant Timone hour Q1: The chain binder is used to secure loads of logs, lumber, pipe, and the like. If the tension T is 3 kN when 0 = 40°, determine the force P required on the lever and the corresponding tension T2 for this position. Assume that the surface under A is perfectly smooth. 650mm 100 mm T COO Q2: The force P is applied to (a) the 50 kg block and (b) the 150 kg block. For each case, determine the magnitude of P required to initiaite motion ? H = 0.40 50kg Pia) 4, = 0.12 150kg --YP(b)Determine the force P required to force the 18° wedge under the 93-kg uniform crate which rests against the small stop at A. The coefficient of friction for all surfaces is 0.47. P 5° Answer: P = 18° IM 1.5 m 93 kg 1.0 m A 18° NA steel ball 1density = 7860 kg>m32 with a diameter of 6.4 cmis tied to an aluminum wire 82 cm long and 2.5 mm in diameter.The ball is whirled about in a vertical circle with a tangential speedof 7.8 m>s at the top of the circle and 9.3 m>s at the bottom of thecircle. Find the amount of stretch in the wire a. at the bottom of the circle.
- The towers holding small wind turbines are often raised and lowered for easy servicing of the turbine. (Figure 1) shows a 900 kg wind turbine mounted on the end of a 24-m-long, 700 kg tower that connects to a support column at a pivot. A piston connected 3.0 m from the pivot applies the force needed to raise or lower the tower. At the instant shown, the wind turbine is being raised at a very slow, constant speed. Figure 75° [[5] 10° 1 of 1 What magnitude force is the piston applying? Express your answer with the appropriate units. Fp= = Submit HÅ Value Provide Feedback Request Answer Units ?A 2414kg car is going up the Amerat hill, at angle 7.8, with 4 people inside the car each of 41kg. The car suspension provides 1326N of lift, and it is accelerating up at 7m/s2. The road provides u=0.4. What is the force provided by the engine? If needed, use g=9.81m/s² Answer: 22975 N The correct answer is: 30970.3 NDetermine the force P required to maintain the 165-kg engine in the position for which 0 = 36°. The diameter of the pulley at B is negligible. Answer: P = i 3.0 m 3.0 m 165 kg B N
- Determine the force P required to force the 18° wedge under the 75-kg uniform crate which rests against the small stop at A. The coefficient of friction for all surfaces is 0.38. P 8° Answer: P = 18° 356 1.4 m 75 kg 0.5 m A 18° N40K P A 40 kg weight is supported by a cord that is wrapped halfway around a cylinder. The coefficient of friction between the cord and the cylinder is 0.3. a) Determine the force, P required to raise the weight at a slow, steady speed.We tie an 80 cm long rubber cord to the ceiling and attach a 50 g weight o its other end. The cord gets extended by 4.0 cm. We raise the weight to the ceiling and let it down. What is the force of the string, when the weight reaches its lowest point?