MASS AND WEIGHT

Mass is the amount of material in an object.

MASS AND WEIGHT

Mass is the amount of material in an object.Mass stays the same WHEREVER the object is.

MASS AND WEIGHT

Mass is the amount of material in an object.Mass stays the same WHEREVER the object is. Mass is measured in kilograms (kg) or grams (g)

MASS AND WEIGHT

Mass is the amount of material in an object.Mass stays the same WHEREVER the object is. Mass is measured in kilograms (kg) or grams (g)People should say their ‘mass is 55kg’ rather than

their ‘weight is 55kg’

MASS AND WEIGHT

Mass is the amount of material in an object.Mass stays the same WHEREVER the object is. Mass is measured in kilograms (kg) or grams (g)People should say their ‘mass is 55kg’ rather than

their ‘weight is 55kg’Weight of an object is the force with which the object

pushes down on whatever it is resting on.

MASS AND WEIGHT

Mass is the amount of material in an object.Mass stays the same WHEREVER the object is. Mass is measured in kilograms (kg) or grams (g)People should say their ‘mass is 55kg’ rather than

their ‘weight is 55kg’Weight of an object is the force with which the object

pushes down on whatever it is resting on. Weight is caused by gravity pulling an object

downwards.

MASS AND WEIGHT

Mass is the amount of material in an object.Mass stays the same WHEREVER the object is. Mass is measured in kilograms (kg) or grams (g)People should say their ‘mass is 55kg’ rather than

their ‘weight is 55kg’Weight of an object is the force with which the object

pushes down on whatever it is resting on. Weight is caused by gravity pulling an object

downwards.

MASS AND WEIGHT

Mass is the amount of material in an object.Mass stays the same WHEREVER the object is. Mass is measured in kilograms (kg) or grams (g)People should say their ‘mass is 55kg’ rather than

their ‘weight is 55kg’Weight of an object is the force with which the object

pushes down on whatever it is resting on. Weight is caused by gravity pulling an object

downwards.The gravity force of an object is often called the

weight force because they both have the same size.

MASS AND WEIGHT

Mass is the amount of material in an object.Mass stays the same WHEREVER the object is. Mass is measured in kilograms (kg) or grams (g)People should say their ‘mass is 55kg’ rather than

their ‘weight is 55kg’Weight of an object is the force with which the object

pushes down on whatever it is resting on. Weight is caused by gravity pulling an object

downwards.The gravity force of an object is often called the

weight force because they both have the same size. Weight is measured in Newtons

MASS AND WEIGHT

The weights on the table shows (or should show) that weight (in N) is always ten times the mass (in kg)

MASS & WEIGHT

The weights on the table shows (or should show) that weight (in N) is always ten times the mass (in kg)

This is because weight is calculated by multiplying mass by g – the strength of gravity.

MASS & WEIGHT

The weights on the table shows (or should show) that weight (in N) is always ten times the mass (in kg)

This is because weight is calculated by multiplying mass by g – the strength of gravity.

The value of g (gravity) Is 10 Newtons per kilogram (10kg -1) on the surface of the earth.

MASS & WEIGHT

The weights on the table shows (or should show) that weight (in N) is always ten times the mass (in kg)

This is because weight is calculated by multiplying mass by g – the strength of gravity.

The value of g (gravity) Is 10 Newtons per kilogram (10kg -1) on the surface of the earth.

This means that every kg of mass pushes down with a weight of 10N.

MASS & WEIGHT

The weights on the table shows (or should show) that weight (in N) is always ten times the mass (in kg)

This is because weight is calculated by multiplying mass by g – the strength of gravity.

The value of g (gravity) Is 10 Newtons per kilogram (10kg -1) on the surface of the earth.

This means that every kg of mass pushes down with a weight of 10N.

Weight = mg Where: g is 10N kg-1m is mass, in kg

MASS & WEIGHT

The weights on the table shows (or should show) that weight (in N) is always ten times the mass (in kg)

This is because weight is calculated by multiplying mass by g – the strength of gravity.

The value of g (gravity) Is 10 Newtons per kilogram (10kg -1) on the surface of the earth.

This means that every kg of mass pushes down with a weight of 10N.

Weight = mg Where: g is 10N kg-1m is mass, in kg

MASS & WEIGHT

1. Anne buys a bag of bananas. The shop assistant tells her that they ‘weigh 3kg’.

a) Calculate the actual weight of the bananasb) One of the bananas has a mass of 150g. What is its

actual weight?2. Calculate the weight of the following:c) A 105kg rugby playerd) A 50kg sack of potatoese) A 500g container of margarine.

QUESTIONS

3. A 15kg rock is dislodged from a cliff and falls to the ground below.a) Calculate the force of gravity pulling the rock

downwardsb) What is the force of the rock on the ground at the

foot of the cliff after it has landed?

QUESTIONS

In pairs, get a force meter and use the weights to find out mass and weight. Remember!!! You must convert the mass into kg…

COMPLETE THE TABLE FROM THE PRACTICAL

Mass (kg) Weight (N)

Draw up a graph showing your results.

NOW USING YOUR DATA

What does the table show about the relationship between the objects’ mass and the objects’ weight?

QUESTIONS