Understanding Spring Scales and Forces

The video tutorial explores the function of a spring scale, which measures weight in Newtons. It explains the forces acting on an object placed on the scale, focusing on tension and weight. The tutorial covers equilibrium, where the net force is zero, and the concept of apparent weight during acceleration. It demonstrates how the scale reading changes with upward and downward accelerations, emphasizing the role of tension force in these scenarios.

What does a spring scale primarily measure?

• Volume

• Weight

• Density

• Mass

What are the two forces acting on the bottle of sand?

• Weight and friction

• Tension and weight

• Tension and friction

• Tension and air resistance

In the context of the spring scale, what does equilibrium mean?

• The object is accelerating

• The object is moving at a constant speed

• The net force on the object is zero

• The object is at rest

Why does the needle oscillate when holding the bottle steady?

• The spring is too tight

• Small accelerations are applied

• The weight of the bottle changes

• The scale is faulty

What happens to the needle when the scale is pulled upward quickly?

• It moves upward

• It breaks

• It moves downward

• It stays the same

What is the apparent weight during upward acceleration?

• The true weight minus the mass times acceleration

• The true weight plus the mass times acceleration

• The mass times acceleration only

• The true weight only

How does the net force equation change during upward acceleration?

• It remains the same

• The direction of forces changes

• The net force is no longer zero

• It includes an additional force

What is the true weight of an object?

• The mass times acceleration

• The tension force

• The apparent weight

• The mass times gravitational acceleration

What happens to the needle when the scale is lowered quickly?

• It oscillates

• It moves downward

• It moves upward

• It stays the same

When analyzing forces during downward acceleration, which direction should be considered positive?

• Rightward

• Upward

• Leftward

• Downward