An airplane flies at 120.0 m/s and banks at a 30°angle. If its mass is 2.50 × 10³ kg. (a) what is the magnitude of the lift force? (b) what is the radius of the turn?
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Q: The terminal velocity of a person falling in air depends upon the weight and the area of the person…
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- Each propeller of the twin-screw ship develops a full-speed thrust of F = 375 kN. In maneuvering the ship, one propeller is turning full speed ahead and the other full speed in reverse. What thrust P must each tug exert on the ship to counteract the effect of the ship's propellers? Assume a = 50 m, b = 125 m, c = 12 m. + D O Answer: P = i CBD +³1 KN 2 F 4TA 3.00 kg block (mass 1) and a 5.00 kg block (mass 2) are connected by a light string as shown; the inclination of the ramp is 40.0°. Friction is negligible. What is: (a) the acceleration of the blocks (b) the tension in the string?A fighter plane is pulling out for a dive at a speed of 900 km/hr. Assuming its path to be a vertical circle of radius 2000 m and its mass to be 16000 kg, find the force exerted by the air on it at the lowest point. Take g = 9.8 m/s ².
- To maintain a constant speed, the force provided by a car's engine must equal the drag force plus the force of friction of the road (the rolling resistance). The density of air is 1.2 kg/m³. (a) What are the drag forces in newtons at 75 km/h and 109 km/h for a Toyota Camry? (Drag area = 0.70 m² and drag coefficient = 0.28.) at 75 km/h at 109 km/h N N (b) What are the drag forces in newtons at 75 km/h and at 109 km/h for a Hummer H2? (Drag area = 2.44 m² and drag coefficient = 0.57.) at 75 km/h at 109 km/h N NThe terminal velocity of a person falling in air depends upon the weight and the area of the person facing the fluid. Find the terminal velocity (in meters per second and kilometers per hour) of an 88.0 kg skydiver falling in a pike (headfirst) position with a surface area of 0.150 m2. (Assume that the density of air is 1.21 kg/m³ and the drag coefficient of a skydiver in a pike position is 0.7. For each answer, enter a number.) terminal velocity in m/s |m/s terminal velocity in km/h km/hA space station, in the form of a wheel 119 m in diameter, rotates to provide an "artificial gravity" of 3.30 m/s2 for persons who walk around on the inner wall of the outer rim. Find the rate of the wheel's rotation in revolutions per minute that will produce this effect. = rev/min
- The magnitude and direction exerted by two tugboats towing a ship are 1670 kilograms, N30°W, and 1260 kilograms, S50°W, respectively. Find the magnitude, in kilograms, and the direction angle, in degrees, of the resultant force.Find the terminal velocity of a spherical bacterium (diameter 2.00 µm ) falling in water. You will first need to note that the drag force is equal to the weight at terminal velocity. Take the density of the bacterium to be 1.10 × 10³ kg/m³ .A woman stands on a scale while riding in an elevator. When the elevator is at rest, the scale reads 60kg. What will be the reading of the scale in kg when the elevator accelerates. (a) upward at 1.2 m/s^2. (b) downward at 1.2 m/s^2. (c) At what acceleration of the elevator would the person appear to be weightless? Draw the FBD of the problem.