3.1 Mass and Weight 2019 JnN

Which quantity is a force due to a gravitational field?

• density

• mass

• weight

• volume

A box is placed on the ground.

An upward force of 15 N is needed to lift the box at constant speed.

Which row correctly describes the box?

• mass of the box: 1.5 kg, weight of the box: 15 N

• mass of the box: 15 N, weight of the box: 1.5 kg

• mass of the box: 15 N, weight of the box: 150 kg

• mass of the box: 150 kg, weight of the box: 15 N

Which equation shows the relationship between the weight W and the mass m of an object?

• W = m/g

• W = mg

• W = m + g

• W = g/m

An arrow travels horizontally in a straight line at constant speed. In which direction does the weight act?

Two rectangular blocks consist of different materials. Four different methods are suggested to compare the two masses. Which methods give a comparison of the two masses?

• 1, 2 and 3

• 1 and 2 only

• 3 and 4 only

• 4 only

Which row contains two correct statements about the mass and the weight of an object?

The table gives approximate values of the acceleration due to gravity and the atmospheric pressure on three planets.

A body has a mass of 10 kg on Earth.

Which statement about the weight of the body is correct?

• The weight is greatest on Earth.

• The weight is greatest on Mars.

• The weight is greatest on Venus.

• The weight is the same on each planet.

An object which has a mass of 600 kg is on the planet Mars.

The acceleration due to gravity on Mars is 4.0 m/s².

What is the weight of the object on Mars?

• 60 N

• 150 N

• 2400 N

• 6000 N

Two objects are placed on a balance, one on each side.

Which properties of the objects can be compared using the balance?

• weight, mass and volume

• weight and mass only

• volume and density

• density only

A body is moved from place X to place Y where the gravitational field strength is different.

What happens to its mass and to its weight due to the move?