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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.Determine the force P required to force the 10° wedge under the 94-kg uniform crate which rests against the small stop at A. The coefficient of friction for all surfaces is 0.31. 5° Answer: P = 10° i 1.7 m 94 kg 0.9 m A 10° N