Fill in the blanks: Determine the tension in the string and acceleration of the block A and B weighing 1200 N and 400 N connected by a string as shown in figure Assume pulleys are weightless and frictionless. A 400N 1200N fa) B)
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- The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016, determine the force F required to advance the bar at a constant speed.The block of weight W is pulled by the force P inclined at the angle to the horizontal. Find the smallest force P and the corresponding angle that would cause impending sliding of the block. The angle of static friction between the block and the ground is s.Draw the FBD for the bar described in Prob. 5.1 if the bar is homogeneous of mass 50 kg. Count the unknowns.
- Calculate the horizontal force P required to push the 85-lb lawn mower at constant speed. The center of gravity of the mower is at G, and the coefficients of rolling resistance are 0.12 for the front wheels and 0.18 for the rear wheels.Pbm 4) Two blocks A and B of weight 80 N and 60 N are connected by a string, passing through a smooth pulley, as shown in figure Calculate acceleration of the body and tension in the string. Legion to T 60N B T A 80N Pbm 5) Two blocks A and B of weight 120 N and 100 N are hung to the ends of a rope, which is passing over an ideal pulley as shown in figure The velocity of the system is increased from 1 m/s to 2 m/s How much the distance, these blocks will move? Also calculate the tension in the string? Use work energy methodA 25.5 kg mass (m) is suspended by the cable assembly as shown in the figure. The cables have no mass of their own. The cable to the left (T) ) of the mass makes an angle of 0.00 with the horizontal, and the cable to the right (T;) makes an angle (02) of 40.6. If the mass is at rest, what is the tension in each of the cables, T and T; ? The acceleration due to gravity is g = 9.81 m/s?. T T = 123.52 N 123.52 TOOLS x10
- 1. An Atwood machine (shown below) consists of a pulley with two weights W₁ = 100 N and W₂ = = 200 N attached at the end of the string. T is the tension in the string and a is the acceleration of the system. If the tension and the acceleration satisfy the set of equations: T-W₁ = = 10a W₂-T = 20a Solve for the tension 7 and the acceleration a. It's okay if you do not understand the physics right now. Solve as a systems of linear equation problem. Solve for T and a: T= a = b WI 2 W2 N m/s²Mass of both blocks = 14kg. The friction coefficient for this bar is µ= 0.4. The spring constant k= 60 N/m. The spring is compressed 0.1 m and then released. d a Find: www 1. The magnitude of block B's acceleration 2. The magnitude of tension of the rope A B a=?Q1. m-1 kg m,=4 kg The mechanism set up with m,, m, and weightless pulleys is as shown in the figure. Then, the masses are released. Static and kinetic friction between the inclined plane and m, are 0.6 and 0.5 respectively. What are the accelerations of m, and m,? (g = 10 m / s². Frictions and mass of the pulley are ignored.) Q2. 300 m/s .*........ yatay 100 m/s 320 m x=? A plane is flying horizontally at an altitude of 320 m with 300 m/s speed. It launches its bomb with 100 m/s speed relative to the plane as shown. How many meters away from the castle should the plane launch its bomb to hit the castle. (g=10 m/s², sin370=0.6; cos37°=0.8) Q3. 2 kg The object in the frictionless cone in the figure is making a uniform circular motion. Calculate, a) the normal force that the cone exerts on the object, b) centripetal force applied to the body, c) Find the speed of the object.
- Determine the tension in the string and acceleration of the block A and B weighing 1200 N and 400 N connected by a string as shown in figure Assume pulleys are weightless and frictionless. ANS: T =__________ N, aA = ________ m/s² ap =________m/s² (one decimal place) (absolute value)Form the figure shown, a flexible belt placed around a rotating drum of 4-inch radius acts as a brake when the arm ABCD is pulled down by the force P. The coefficient of kinetic friction between the belt and the drum is 0.7. What force P that ● would result in a braking torque of 400 lb • in., assuming that the drum is rotating counterclockwise. Neglect the weight of the brake arm. 60° 4 in.. A B |--2 in.-² 4 in. 1-2 60° 2 in. D Р5. There are two masses with unequal weight. The masses are tied by a rope and they are connected over two pulleys as shown in Figure 1. When the system is released, heavier mass accelerates downward and lighter accelerates upward. Assume frictionless pulleys, find the theoretical tension of the thread and the theoretical acceleration. Masses are M1= 6.00 kg and M2= 2.00 kg. Two discs are allowed to move on inclined air table with dimensions a= 11cm, b=17cm, c=60cm. (Hint: You can use free body diagram and M1 b Newton' W.B. M2 s second law of a motion equation (F=m.a) to solve tension, g=980cm/s?.)