Mass Weight Density

An object that has a mass 15 kg on the Earth is taken to the Moon. The gravitational field strength on the Earth is 10 N/kg and on the Moon is 1.6 N/kg. What are the mass and the weight of the object on the Moon?

• A

• B

• C

• D

What defines gravitational field strength?

• mass x 10

• mass x weight

• mass / weight

• weight/mass

A hollow rectangular metal block has the dimensions shown. The mass of the block is 819 g. What is the density of the metal?

• 3.15 g/cm³

• 4.10 g/cm³

• 5.85 g/cm³

• 13.7 g/cm³

Which statement concerning the mass of a body is not correct?

• Mass experiences a force due to gravitational acceleration.

• Mass is affected by variations in the strength of a gravitational field.

• Mass is a measure of the amount of substance in a body.

• Mass resists a change in the state of rest or motion of a body.

The diagram shows a measuring cylinder that contains some water and a stone. The mass of the stone is 4.0 g and its density is 2.0 g/cm³. What is the volume of the water?

• 2.3 cm³

• 2.6 cm³

• 3.8 cm³

• 4.1 cm³

A gravitational field is a region in which a body with mass experiences a force. Which statement about this force is correct?

• It can be attractive or repulsive.

• It depends on the charge on the body.

• It depends on the volume of the body.

• It keeps a planet in orbit around the Sun.

The weight of a spacecraft on Earth is 1250 N and on Mercury it is 475 N. The gravitational field strength on Earth is 10 N/kg. What is the gravitational field strength on Mercury?

• 0.26 N/kg

• 0.38 N/kg

• 2.63 N/kg

• 3.80 N/kg

A student calculates the number of paper clips in a box. The mass of one paper clip is 0.50g and its density is 8.0 g/cm³. The student has determined the total volume of the paper clips using a measuring cylinder and water. How many paper clips are there in the box?

• 160

• 320

• 400

• 720

A 1 kg object is on the suerface of the Earth, the International Space Station (a satellite in space) and the surface of the moon. Where is the inertia of the object the largest?

• on the surface of the Earth

• On the international space station

• on the surface of the moon

• it is in same in all of the above

The weight of objects varies on different planets within the Solar System depending on the strength of the parents' gravitational field. Which object has the smallest mass?

• A

• B

• C

• D