CALCULATION OF GRAVITATIONAL FORCES

Basic Science JSS1 Third Term

WEEK FOUR

CALCULATION OF GRAVITATIONAL FORCES

Performance Objectives

Students should be able to:

• CALCULATION OF GRAVITATIONAL FORCES
• CALCULATION OF WORK DONE AGAINST GRAVITY

Content

REFERENCE
Precious seed BASIC SCIENCE FOR JUNIOR SECONDARY SCHOOLS BOOK

CALCULATION OF GRAVITATIONAL FORCES

CALCULATION OF WORK DONE AGAINST GRAVITY

Suppose you lift an object of mass 1kg from the ground to a height of 1m, the work done in lifting the abject is calculated by using the formula Mgh

Mgh = 1 x 1 x 9.8 joules (g = 9.8m 15²) joule is the unit of work.

BALANCED AND UNBALANCED FORCES

When an object is stationary, the forces acting on it are balanced forces. The sum of such…