3.1 Effects of Forces on an Object
Forces make a stationary object move or make a moving object move faster, slower, stop or change its direction. Forces also make an object change its shape and size. Examples are pushing to change the speed of an object, lifting up an object to make it move, pressing an object to change its shape and size.
Material
One table
Methods
1. One student pushes the table to the room corner as shown in Picture 1. Other students observe the force direction and the effaces.
2. Two students push the table to the room corner as shown in Picture 2. Other students observe the force direction and the effaces.
3. Two students move the table to the room corner together. The first one pushes and the other pulls as shown in Picture 3. Other students observe the force direction and the effects.
4. Two students stand against each other on the opposite sides of a table. Each one tries to push the table forward as shown in Picture 4. Other students observe the force direction and the effect.
5. Record the observation results by drawing arrows to show the force direction and the conclusion of all the attempts.