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Dynamics (Forces and Newton's Laws of Motion)

Forces and Newton's Laws of Motion

Forces and Newton's Laws of Motion

Dynamics Principles
Using Newton’s Laws

Using Newton’s Laws

Dynamics Principles
An ice skater skates around a circular rink with a diameter of 20 m. If it takes her 62.8 s to go around the rink once, what is the coefficient of friction of the ice?
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
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
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
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
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?
Mars has 11% the mass of the Earth and a radius 54% of the Earth. What is g on Mars?
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 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?
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?

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