Abdelfattah_Mossad_Midterm

Today's Lesson :

Linear, Rotational motion and Forces

To Know that both of the motion are results of Translational and rotational Forces

2

To Differntiate Between Linear and rotational Movement

1

Lesson Goals

When a body is rotating about an axis

Rotational Motion

when a body moves on a straight line (Linear Movement)

Linear Motion

Body Movement in nature can set into Two Categories :

Here we have an example of a skater who applies a force with one oh his legs to keep moving straight forward (Linear Movement)

Linear Motion

If Any object is spinning around it's axis or rotating about an axis, This angular movement is called a (rotation)

Rotational Motion

Motion Due To Forces

All the bodies moving needs a force that results in the motion, and such forces are explained in the next slide.

A Translational Force results in linear motion

and can be calculated from the following equation :

F = m X a

Translational Force

An angular force is named a Torque to differnitaite fron the translation, It can be calculated from the following equation :

T = F X r

Angular Force

Multiple Choice

If a body is moving on a straight lin, what can we call this type of motion

• Rotational Motion

• both a Linear & Angular motion

• Linear Motion

• No movement

Multiple Choice

if a man is rotating a ball attached to a string, what can we call This Type of motion

• Linear Motion

• Both Linear and Rotational Motion

• No Movement

• Rotational Motion

Fill in the Blanks

Earth is rotating around the sun , The type of motion is

Multiple Choice

what is the equation for Translational force

• F = m X a

• T = F X r

• W = F X d

• V = d / t