A small car with mass 0.670 kg travels at constant speed on the inside of a track that is a vertical circle with radius 5.00 m (Figure 1). Part A If the normal force exerted by the track on the car when it is at the top of the track (point B) is 6.00 N. what is the normal force on the car when it is at the bottom of the track (point A)? Express your answer with the appropriate units. be ?
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- A stone is tied to a string (length = 0.782 m) and whirled in a circle at the same constant speed in two different ways. First, the circle is horizontal and the string is nearly parallel to the ground. Next, the circle is vertical. In the vertical case the maximum tension in the string is 7.60% larger than the tension that exists when the circle is horizontal. Determine the speed of the stone. Number i Unitsng An airplane flies in a horizontal circle at a speed of 485 km/h. The wings of the aircraft are at an angle of 41 degrees to the horizontal (as shown in the figure). Assume the aircraft wings generate an aerodynamic lift force perpendicular to the wings. What is the radius of the circle in which the plane is flying? Your answer should be in meters:Please explain and answer. Thank you!
- A 300 g ball on a 70-cm-long string is swung in a vertical circle about a point 200 cm above the floor. The string suddenly breaks when it is parallel to the ground and the ball is moving upward. The ball reaches a height 600 cm above the floor. Part A What was the tension in the string an instant before it broke? Express your answer to two significant figures and include the appropriate units. HÅ T = Value Submit Request Answer 0 ? UnitsA 55.8kg ice skater is moving at 4.03 m/s when she grabs the loose end of rope, the opposite end of which is tied to a pole. She then moves in a circle of radius 0.797 m around the pole . A.)Determine the force exerted by the horizontal rope on her arms. B.) what is the ratio of this force to her weightA car of mass M = 1500 kg traveling at 65.0 km/hour enters a banked turn covered with ice. The road is banked at an angle 0, and there is no friction between the road and the car's tires as shown in ( Figure 1). Use g = 9.80 m/s² throughout this problem. Figure 1 of 1 Part A What is the radius r of the turn if 0 = 20.0° (assuming the car continues in uniform circular motion around the turn)? Express your answer in meters. ► View Available Hint(s) r = Submit VE ΑΣΦ 20 ? Review | Constants | Periodic Table m
- Part A A block lies on a plane raised an angle e fram the horizantal. Three forces act upon the block: Fw, the force of gravity. Fn. the narmal force; and Fr. the force of friction. The coefficient of friction is large enaugh to prevent the block from sliding (Figure 1). Consider coordinate system a, with the x axis along e plane. Which forces lie along the axes? O Ée arly O F, anly O F. only O ři and F. O ř and F. O řa and F. O ř and řa and ř. Submit Requect Ancwor Part B Which forces lie along the axes af the coordinate system b, in which the y axis is vertical? O F anly O F. anly O F. only O F and P, O ř and F. O F, and F. O řr and Fa and Ě, Submit Request Answer Usually the best advice is to choose a coordinate system so that the acceleration of the system is directly along one of the coordinate axes. If the system isn't accelerating, then you are better off choosing the coordinate system with the most vectors along the coordinate axes. But now you are gaing to ignore that advice.…An 8.00 kg crate sits on an inclined plane that is inclined at 33.0 above the horizontal. The coefficient of kinetic friction between the crate and the surface of the plane is 0.300. A constant horizontal force F = 28.0 N is applied to the crate (Figure 1), and the crate moves down the plane. Part A If the crate is initially at rest, find its speed 2.00s after the force is applied? Express your answer with the appropriate units. HA Value Units Figure 1 of 1> Submit Request Answer Provide Feedback F 33.0°Please Asap
- Two 150 kg lead spheres are suspended from 100-m-long massless cables. The tops of the cables have been carefully anchored exactly 1 m apart. Part A By how much is the distance between the centers of the spheres less than 1 m? Express your answer to two significant figures and include the appropriate units. Ax = ¹"¯μA Value Units ?A snake of length L and linear mass density p rises from the table. It's head is moving straight up with the constant velocity v. 1. What is the normal force that the snake exert on the table? 2. What is the tangential (parallel to the surface of the table) force that the snake exert on the table? 3. What is the minimal coefficient of friction between the snake and the table which would allow the snake to raise like that? 4. What is the total mechanical work which the snake will have done when it rises full length?A student is swinging a ball of mass 0.323 kg in a vertical circle at constant speed, as shown in the figure below. (g indicates the direction of the acceleration due to gravity: directly downward.) The length of the string is 0.76 m. She measures the tension and finds that it is 5.601 times larger at the bottom of the circle than at the top. What is the speed of the swinging mass?