Effects Of Forces

Question 1

Force equation

Answer 1

F = mass x acceleration
F = ma

Question 2

Examples of forced

Answer 2

Stretching, bending, twisting, squash, pull, push

Question 3

What is plastic deformation?

Answer 3

When an object has had enough force on it that it doesn’t return to its normal shape

Question 4

Elastic deformation

Answer 4

When an object returns to its original shape after force has been on it

Question 5

Experiment to show limit of proportionality

Answer 5

Spring extension to show deformation from stretching. Add weights and measure extension

Question 6

Hookes law equation

Answer 6

F = kx
Gradient (spring constant) x Extension = force

Question 7

What does hookes law state?

Answer 7

Force dp to extension

Question 8

What is a resultant force?

Answer 8

When forces aren’t equal so cause a movement in a direction (acceleration)

Question 9

What happens in circular movement?

Answer 9

Velocity + direction changes where resultant force is in the centre

Question 10

What is friction?

Answer 10

A force that produces heat and causes objects to slow down in the opposite direction of movement.

Question 11

Example of friction

Answer 11

Drag air resistance