# How do you make a simple pendulum for a school project?

## How do you make a simple pendulum for a school project?

What to do:

1. Tie a weight onto the end of the piece of string.
2. Make a loop at the other end of the string.
3. Screw the hook into the piece of wood and balance the wood between the backs of two chairs.
4. Put the loop of string over the hook.
5. Start the weight swinging and time how long it takes to make 20 swings.

What is the objective of 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.

### How do you bounce chalk?

Touch the chalk to the board, and pull the chalk downwards, while holding it at the same angle \theta. You should feel your chalk “bounce” or “vibrate” along the surface of the board, creating a dotted line!

What does dotted line represent in engineering drawing?

The dashed narrow lines are used to represent the edges that are not directly visible. In this type of line, the dashes are about 2 mm long with spacing between the two dashes of about 1 mm. The long dashed-dotted narrow line is used to represent the axis of an object and centers of circles and arcs.

#### Why did MIT drop Lewin?

In December 2014, MIT revoked Lewin’s Professor Emeritus title after an MIT investigation determined that Lewin had violated university policy by sexually harassing an online student in an online MITx course he taught in fall 2013.

What is the purpose of the pendulum experiment?

The purpose of this experiment is to measure the acceleration due to gravity by means of a physical pendulum. The simple pendulum may be defined as a point mass attached to a massless unstretchable string, which is attached to a rigid support.

## 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:

1. making timings by sighting the bob past a fixed reference point (called a fiducial point )
2. 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.

### What can you play with chalk?

One piece of chalk, 8 active games

• Hopscotch. This is an oldie (as in kids have been playing it for over 300 years) but a definite goodie.
• Avoid the Shark. With different colours of chalk, draw “beaches” various distances apart.
• Chalk Bullseye.
• Four Square.
• Chalk Maze.
• Alphabet Hop.
• Sidewalk Twister.
• Corners.

What are the 3 major line types that are used for technical drawings?

Using the Alphabet of Lines

• Construction Line. This line is used mainly in sketching, which is a freehand drawing technique.
• Visible Object line. This line is used to draw all the edges of the object.
• Hidden Object Line.
• Centre Line (or centreline)
• Extension Line.
• Dimension Line.

#### What is simple pendulum explain with diagram?

A simple pendulum has a heavy point mass (known as bob) suspended from a rigid support by a massless and inextensible string. When the bob from its mean position is pulled to one side and then released, the pendulum is set to motion and the bob moves alternately on either side of its mean position.

What is the simple pendulum experiment?

The simple pendulum exhibits Simple Harmonic Motion (SHM) as the acceleration of the pendulum bob is directly proportional to the displacement from the mean position and is always directed towards it. The time period (T) of a simple pendulum for oscillations of small amplitude, is given by the relation. T = 2 π L / G.

## How do you plot a simple pendulum graph?

Plot a graph between l (column, 2b) and T2 (column 5) by taking Z along X- axis and T2 along Y-axis. The graph comes to be a straight line. From this graph, for T2 = 4, l comes to be 100 cm. Hence for seconds pendulum (T = 2 s) length comes to be 100 cm.

What materials make a pendulum?

How to Build a Pendulum

• Cloth or canvas sack.
• Fine, dry sand.
• Large garbage bag.
• Nail.
• Nylon cord, 13 feet (4 meters) long.
• Tall stable structure, such as a 12-to-15 foot (3.7-to-4.6 meter) ladder or swing set.
• Tape.

### What is simple pendulum 12th class?

A simple pendulum consists of a heavy point mass (called bob) suspended from rigid support by a massless, inextensible string.

What is simple pendulum with example?

The to and fro motion of a simple pendulum is an example of a periodic or an oscillatory motion. The pendulum is said to have completed one oscillation when its bob,starting from its mean position O, moves to A, to B and back to O.

#### What is the conclusion of simple pendulum?

What is simple pendulum class 11th?

Class 11 Physics Oscillations. Simple Pendulum. Simple Pendulum. A simple pendulum is defined as an object that has a small mass (pendulum bob), which is suspended from a wire or string having negligible mass. Whenthe pendulum bob is displaced it oscillates on a plane about the vertical line through the support.

## What is a simple pendulum?

A simple pendulum is a mechanical system of mass attached to a long massless inextensible string that performs oscillatory motion. Pendulums were used to keep a track of time in ancient days.

How do you calculate the energy of a simple pendulum?

E = KE + PE= 1/2 mg Lθ 0 2 =constant. The energy of the simple pendulum is conserved and is equal in magnitude to the potential energy at the maximum amplitude.

### What are the basic assumptions of simple pendulum motion?

Simplifying assumptions can be made, which in the case of a simple pendulum allows the equations of motion to be solved analytically for small-angle oscillations. Motion occurs only in two dimensions, i.e. the bob does not trace an ellipse but an arc.

What frame of reference is used for simple pendulum?

A simple pendulum is placed in a non-inertial frame of reference (accelerated lift, horizontally accelerated vehicle, vehicle moving along an inclined plane). The mean position of the pendulum may change.