Funny image no.3

Love minions!

Origami heart!

It is a great origami!I make 4 hearts,glue them together and then I have a flower made of hearts!(you will see that at the last picture)

I hope you like it!

Funny image no.2

I think this is true for all of us!

😅

Pendulum

This article is not for animals,but for science.I am going to write about the Pendulum.I made a power point about it,but I will make it as an article.

THIS IS THE PENDULUM!

 ™A simple pendulum consists of a light, inextensible string suspended at the one end to a pivot point and attached to a point mass at the other end.

™

™ The period of a pendulum is the time taken for one complete oscillation. 

™ A pendulum is an object hanging from a fixed point that when pulled back and released, swings freely. A pendulum swings due to gravity and inertia. 

•      Pendulums are used in a variety of applications from timing devices like clocks and metronomes to oil prospecting devices. The word "pendulum" comes from the Latin word "pendulus" which means "hanging". 

™Period is the time that a pendulum needs to make one complete oscillation .

™Period is symbolised with T and it is measured in seconds (s) .

™Frequency is the number of complete oscillations per unit time.

™Frequency is symbolised with f and it is measured in Hertz (Hz) .

™Α complete oscillation , is when the pendulum moves from position A to B , and to C to B and back to A.

Question 1
Does the angle θ affect the oscillation ?

Experimental Method

•A metre rule is used to measure the length of the pendulum. For this investigation the length is kept constant, 17cm.

•A metal sphere of mass 200g is attached on the one end.

•Several trials were conducted  and by varying the angle θ that the string makes with the vertical orientation .

•Τhe time taken for  10 oscillation s was measured by using a stopwatch. The time period is calculated.

The data is shown in the table below.

List of the Materials

•Simple pendulum

•Ruler

•Stopwatch

•Retort stand

™The size of angle θ doesn’t affect the time period of oscillation of a simple pendulum at a given length.