الديناميكا (القوى وقوانين نيوتن للحركة)

Forces and Newton's Laws of Motion

Forces and Newton's Laws of Motion

قوانين الديناميكا
Using Newton’s Laws

Using Newton’s Laws

قوانين الديناميكا
الفلاتر
المقالات في الفئة الديناميكا (القوى وقوانين نيوتن للحركة)
الاسم
A jet flies at level flight. The engines produce a total of 20000 N of forward thrust, the jets mass is 50000 kg, and it accelerates at 0.3 m/s2. What is the magnitude of the air resistance against which the jet flies?
Two boys push a 5-kg box on a frictionless floor. James pushes the box with a 10-N force to the right. Louis pushes the box with an 8-N force to the left. What is the magnitude and direction of the boxs acceleration?
A 70-kg astronaut floats at a distance of 10 m from a 50000-kg spacecraft. What is the force of attraction between the astronaut and spacecraft?
An 82 kg couch is being pushed with a force of 56N at an angle of 40 degrees above horizontal. If the coefficient of friction between the couch and the floor is 0.051, what is the acceleration of the couch? Be sure to include free body diagrams in your re
A string with a mass on each end hangs over a frictionless pulley as shown on the right. Calculate the acceleration of the system
Two masses are hanging vertically by a rope strung through a pulley. The mass on the left of the pulley is 5 kg, while the mass on the right is 10 kg. If the positive direction of the pulley is counterclockwise, what is the magnitude and direction
A proposed "space elevator" can lift a 1000-kg payload to an orbit of 150 km above the Earths surface. The radius of the Earth is 6.4 X 10^6 m, and the Earths mass is 6 X 10^24 kg. What is the gravitational potential energy
A pulley of radius 40 cm and a moment of inertia of .2 kg*m^2. A string is wrapped around the pulley, and a 20 g mass is hung from the string on one side of the pulley. Calculate the magnitude of the angular acceleration of the pulley.
A 1000-kg car makes a turn on a banked curve. The radius of the turn is 300 m, and the turn is inclined at an angle (0 = 30°). Assume that the turn is frictionless.-Draw a free-body diagram of this situation
verify newtons second law