Understanding Balance in Scales

The video tutorial explains how to determine the mass of a mystery object using a balanced scale. Initially, the scale is balanced with a mystery mass on one side and known 1 kg masses on the other. The tutorial explores the problem of finding the mystery mass by maintaining balance. It demonstrates that removing equal mass from both sides keeps the scale balanced, leading to the conclusion that the mystery mass is 7 kg.

What is the initial state of the scale in the video?

• The scale is missing.

• The scale is balanced.

• The scale is unbalanced.

• The scale is broken.

What is the main question posed about the mystery mass?

• How to add more masses?

• How to remove the scale?

• How to determine the mystery mass?

• How to make the scale unbalanced?

What happens if you remove masses only from one side of the scale?

• The scale breaks.

• The scale becomes unbalanced.

• The scale remains balanced.

• The masses disappear.

Why is removing masses from only one side not helpful?

• It makes the scale heavier.

• It doesn't provide useful information about the mystery mass.

• It makes the scale disappear.

• It balances the scale.

What must be done to keep the scale balanced when removing masses?

• Remove different amounts from each side.

• Remove the same amount from both sides.

• Add masses to one side.

• Do nothing.

What is the result of removing equal masses from both sides of the scale?

• The scale becomes unbalanced.

• The scale remains balanced.

• The scale breaks.

• The masses disappear.

How many 1kg masses are left on the scale after removing three from both sides?

• 8

• 5

• 6

• 7

What is the mass of the mystery object after balancing the scale?

• 8 kilograms

• 7 kilograms

• 6 kilograms

• 5 kilograms

What is the purpose of removing the same number of masses from both sides?

• To add more masses.

• To make the scale disappear.

• To keep the scale balanced.

• To make the scale heavier.

What does the balanced scale indicate about the mystery mass?

• It is lighter than the remaining masses.

• It is missing.

• It is heavier than the remaining masses.

• It is equal to the remaining masses.