2.09 Forces in balance

Question 1

What is gravitational force?

Answer 1

If you hang an object from a spring balance, you measure a downward pull from Earth. This pull is called the gravitational force.

Question 2

3 features of gravitational force

Answer 2

All masses attract each other.
The greater the masses, the stronger the force.
The closer the masses, the stronger the force.

Question 3

Weight

Answer 3

Weight is another name for the Earth’s gravitational force on an object. It is measured in N.

Question 4

What is a gravitational field?

Answer 4

A gravitational field is a region in which a mass experiences a force due to gravitational attraction.

Question 5

What is gravitational field strength?

Answer 5

The Earth has a gravitational field around it. Near the surface, this exerts a force of 10 newtons on each kilogram of mass.

Question 6

Gravitational force formula

Answer 6

weight= mass * g

Question 7

What are the two meanings g can have

Answer 7

gravitational field strength, and acceleration due to gravity.

Question 8

what formula is used for acceleration due to gravity?

Answer 8

force= mass * acceleration