The length of the pendulum is directly correlated to its period as per the pendulum equation: T = 2π√(L/g), where T is the period of the pendulum, L is its length, and g is the gravitational constant 9.8 m/s2. Regardless of the weight of the pendulum bob, otherwise known as the weight at the end of the string, the deciding factor of the period of the swing is length, as it is the only variable in the stated equation.Know More
A simple pendulum is modeled by physicists as a point mass suspended from a rod or string, which has negligible mass. If the rod or string has a significant mass, then it must be modeled differently. This system is considered a resonant system with a specific resonant frequency, which means that depending on the length of the string or rod, the pendulum will swing within a specific range of oscillation values, as commonly observed in clocks.
In 1581, Galileo discovered that the period and frequency of a pendulum is unaffected by the amplitude while watching a chandelier swing during a church service. He noticed that the chandelier would swing faster when it was swinging widely and slower when it moved less distance. He timed the period of the oscillation during both instances with his heartbeat and found the number of beats per period was roughly the same when swinging widely and moving less distance.Learn More
Steam power works on the principle that heating water to the point of vaporization causes a build-up of pressure, because the vaporized water takes up more space than liquid water. Gases, liquids and solids are all held together by different molecular forces.Full Answer >
Gravity is important because it is the force the holds everything in the universe together. Although it is the weakest of the four known natural forces, it is the most dominant of those forces. No matter the size of an object, it has a gravitational force that extends through all space.Full Answer >
When a fish swims through water, it experiences drag caused by fluid friction. To swim successfully, a fish must use its strength to overcome resistance caused by friction. In clear waters, the water is quite thin, making swimming easier, but in murky waters, fish experience more friction, making swimming difficult.Full Answer >
The four main types of motion are translational, oscillatory, reciprocating and rotational motion. Some mechanisms use one type of motion for input but another type entirely for output.Full Answer >