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
Mars orbits the Sun at a distance of 2.3 X 10^11 m. The mass of the Sun is 2 X 10^30 kg, and the mass of Mars is 6.4 X 10^23 kg. Approximately what is the gravitational force that the Sun exerts on Mars?
A 1-m pry bar is held horizontally and used to open a crate. The tip of the bar, which serves as the fulcrum, is pushed in a distance of 2 cm between the crate lid and the crate. If a 20-N force is applied perpendicularly to the end of the bar, what force
A warrior spins a slingshot in a horizontal circle above his head at a constant speed. The sling is 1.5 m long, and the stone has a mass of 50 g. The tension in the string is 3.3 N. When he releases the sling, what will the stones speed be?
A jet takes off at an angle of 60° to the horizontal. The jet flies against a wind that exerts a horizontal force of 1000 N on it. The engines produce 20000 N of thrust (60° to the horizontal), and the mass of the jet is 90000 kg
A 3.0-m-long uniform rod with a mass of 12 kg rotates about an axis through its center. There are two applied forces as shown in the diagram below. The moment of inertia for a rod rotating about its center is given by I = 1/12 M L^2.-Assuming a counterclo
Two masses, A and B, where B is twice the mass of A, are attached together by a long massless rope, and are on opposite sides of a frictionless pulley. The pulley is fixed at the top of a ramp, that is inclined at an angle of 66° to the horizontal. What i
A satellite orbits the Earth at a distance of 100 km. The mass of the satellite is 100 kg, while the mass of the Earth is approximately 6.0 x 10^24 kg. The radius of the Earth is approximately 6.4 X 10^6 m. What is the approximate force
Find the rate at which the system will accelerate, and calculate how far each mass should move in 3.2 s, if the system is initially moving at 2.0 m/s. Assume that the pulleys are frictionless, that the coefficient of friction between the ramp surface and
A 2.0-m-long lever is held horizontally with the fulcrum placed at 0.50 m from the left end. How much vertical force must be applied to the right end of the lever to support a 1000-N rock on the left end?
A crane is used to pick up a 50.0-m-long steel beam to place in a building. The beam is uniform, but the crane cable is placed 2.0 m off the center of the beam. How much vertical force must be placed on the guide rope to keep the beam level? The beam has