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When a large bone such as the femur is broken, the two pieces are often pulled out of alignment by the complicated combination of tension and compression forces that arise from the muscles and tendons in the leg (see the X-ray image in figure A). To realign the bones and allow proper healing, these forces must be compensated for. A method called traction is often employed. If a total tension force of 311 N is applied to the leg as depicted in figure B to realign the parts of the femur, how much mass m must be attached to the bottom pulley?
____kg
Unpolarized light of intensity I0 passes through six successive Polaroid sheets each of whose axis makes a 40? angle with the previous one
You have a 1.91-m-long stretched string with a mass of 19.3 g. When you oscillate the string at 440 Hz, obtain the tension in the string
A charge 2q is located at the origin. A charge -3q is located at x = d, y = 0, z = 0. Where is the electric field zero
A projectile is launched at ground level with an initial speed of 50.0 m/s at an angle of 30.0º above the horizontal. It strikes a target above the ground 3.00 seconds later. What are the x and y distances from where the projectile was launched to..
Seat belts and air bags save lives by reducing the forces exerted on the driver, A 58kg person is in a head-on collision. The car's speed at impact is 13m/s. Estimate the net force on the person if he or she is wearing a seat belt and if the air ..
A farmer planted a field of Bt 123 corn and wants to estimate the yield in terms of bushels per acre. He counts 22 ears in 1/1000 of an acre. He determines that each ear has about 700 kernels on average. He also knows that the bushel contains abou..
The balls have a glancing collision, not a head-on collision, deflecting the second ball by 90° and sending it north at 1.51 m/s. Illustrate what are the speed and direction of the first ball after the collision?
A car started frm rest and accelerated for 5s at 6.00m/s2.Then it stayed at a constant speed for 20 s. It next slowed down at 3m/s2 until it came to a stop? how far did it travel during the first 5 s.
Carlos is pitching in the nal game of the season. The pitcher's mound is 18.4 meters from home plate, With what speed does the ball cross the plate
A man drags a table 3.80 m across the floor, exerting a constant force of 51.0 N, directed 31.0° above the horizontal. Find the work done by the applied force
A 2200 kg car is moving at a speed of 30.0 m/s. Determine the stopping distance (in meters) if the brakes supply a force of 3500 newtons
A long, current-carrying solenoid with an air core has 1640 turns per meter of length and a radius of 0.0173 m. What is the mutual inductance of this system
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