Unbalanced gyroscope precession.

The passive and active vibration isolation systems.

Central and eccentric collisions of the particles.

Ballistic pendulum. Measuring the amplitude of the pendulum oscillation we can determine the speed of an incoming ball (bullet).

Coupled oscillators. In the process of coupled oscillations, energy is transferred between the individual oscillators. As a result the amplitude of oscillation is periodically changed.

Free harmonic oscillation. An oscillating pendulum leaves a trace in the form of a sinusoid. Frequency of oscillation depends on the mass of the ball and the stiffness of the spring.

Satellite motion. Geo-stationary orbit. Kepler's law. Low Earth Orbit satellites. "Iridium".

Motion of a body in the presence of a gravitational field. The maximum range of a missile will be observed when firing at the angle of 45 degrees to the horizon.

Black holes orbiting around each other in decaying orbits are merging with absorption of the gas and dust that surround them.

Cavendish's torsion-bar experiment. The apparatus employed was a torsion balance, essentially a stretched wire supporting spherical weights. Attraction between pairs of weights caused the wire to twist slightly, which thus allowed the first calculation of the value of the gravitational constant G.

Eratosthenes' measurement of the Earth's circumference. At Aswan the Sun's rays fall vertically at noon at the summer solstice. Eratosthenes noted that at Alexandria, at the same date and time, sunlight fell at an angle of about 7° from the vertical. Given estimates of the distance between the two cities, he was able to calculate the circumference of the Earth.

Experiments with rolling balls, tubes and cylinders down on an inclined plane. Galileo rolled brass balls down the inclined plane, timing their descent with a water clock. He showed that the distance traveled by a ball is proportional to the square of the time. This experiment disproved an Aristotle's prediction that the velocity of a rolling ball is constant.

Foucault's pendulum. The experimental apparatus consists of a tall pendulum free to oscillate in any vertical plane. The direction along which the pendulum swings rotates with time because of Earth's daily rotation. The trace of the pendulum can be learned with the laboratory rotating table.

Galileo's experiment on falling objects. According to legend, Galileo dropped from the Leaning Tower in Pisa cannonball and bullet. Measuring the time of falling of them, Galileo came to the conclusion that in an environment completely devoid of any resistance, all bodies would fall with equal speed. Soon it was confirmed by Newton's experiments on falling bodies in a vacuum.

Sundial. This is a device that measures time by the position of the Sun. In common designs such as the horizontal sundial, the sun casts a shadow from its style (a thin rod) onto a flat surface marked with lines indicating the hours of the day. If such a sundial is to tell the correct time, the style must point towards the geographic North Pole.

Physics tasks with animations on the mechanics.