What is spherical bob?
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What is spherical bob?
A spherical bob is chosen for a simple pendulum for the following reasons: 1. For a given value of density, the spherical shape has minimum volume. 2. The air friction is minimum due to spherical shape.
What is the bob in a simple pendulum?
A bob is the mass on the end of a pendulum found most commonly, but not exclusively, in pendulum clocks.
What is the aim of a simple pendulum experiment?
The goal of this experiment was to determine the effect of mass and length on the period of oscillation of a simple pendulum. Using a photogate to measure the period, we varied the pendulum mass for a fixed length, and varied the pendulum length for a fixed mass.
Why is it that the motion of a simple pendulum is said to be simple harmonic?
Answer Expert Verified. For a motion to be in simple harmonic, acceleration is directly proportional to displacement and it directs against the direction of displacement , so for the pendulum to be in simple harmonic it should satisfy these two conditions.
Why is spherical bob preferred?
A spherical bob creates more control for the simple pendulum experiment. An irregular bob like a large piece of paper for instance, will create too much air resistance for a basic classical experiment to yield predictable results within the academic lab.
When a hollow spherical bob of simple pendulum is completely filled with water?
Complete step-by step answer: Hence the length of the pendulum increases, so time period increases. So we can conclude that when the entire water is drained out of the sphere, the centre of mass shifts to the centre of the sphere and then time period attains its initial value.
How does a pendulum bob work?
A pendulum consists of a mass (known as a bob) attached by a string to a pivot point. As the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion. The force of gravity acts in a downward direction and does work upon the pendulum bob.
What is the conclusion of a simple pendulum experiment?
The surprising conclusion – the pendulum traverses a longer distance in a shorter time, than in a shorter distance, and its period is shorter. There are a number of reasons why Galileo thought that the period remains constant. One factor which Galileo failed to consider is friction.
How can an experiment improve a pendulum?
Improve the accuracy of a measurement of periodic time by:
- making timings by sighting the bob past a fixed reference point (called a fiducial point )
- sighting the bob as it moves fastest past a reference point. The pendulum swings fastest at its lowest point and slowest at the top of each swing.
Why is it recommended that the angle of swing of the pendulum be made as small as possible?
Explanation: The idea that a pendulum undergoes simple harmonic motion is based on the small angle approximation sin(θ)≈θ. So if the angle of the pendulum is too large, then it will not undergo simple harmonic motion.
What kind of motion does a simple pendulum execute?
simple harmonic motion
A simple pendulum is executing simple harmonic motion with a time period T; If the length of the pendulum.
How or why does a pendulum oscillate?
A pendulum is a weight suspended from a pivot so that it can swing freely. When released, the restoring force acting on the pendulum’s mass causes it to oscillate about the equilibrium position, swinging back and forth.