Work

Senior High SchoolClass: XI / Semester 1

Created by Dewi Tirtasari Universitas Negeri Jakarta

What is mass?

mass is how much “stuff” a thing contains

What is weight ?

weight refers to the rate at which that amount of stuff is being

accelerated towards the earth

Think!!

What difference between

What is WORK ?

When a force acts upon an object to cause a displacement of the object, it is said that work was done upon the object

The equation of Work

Mathematically, work can be expressed by the following equation.

The angle -> Theta (θ)

Keywords of Work

• Force • Displacement• The angle

Practice make perfect

Let’s Mention !

several good examples of work that can be observed in everyday life …

Practice make perfect

Angle Force Distance Work (J)

a. 35 deg 1.12 x 104 N 105 m

b. 45 deg 1.39 x 104 N 84.9 m

c. 55 deg 1.61 x 104 N 73.2 m

Summary

Work is done when a force acts upon an object to cause a displacement. Three quantities must be known in order to calculate the amount of

work. Those three quantities are force, displacement and the angle between the force

and the displacement.

Summary