Front

What is the primary function of a spring scale?

Back

To measure weight.

Front

What law does the spring scale work based on?

Back

Hooke's Law.

Front

What is the purpose of zeroing the scale before using a spring scale?

Back

To measure weight accurately.

Front

Who is credited with the invention of the spring scale?

Back

Richard Salter.

Front

What is Hooke's Law?

Back

The principle stating that the force exerted by a spring is directly proportional to the distance it is stretched or compressed.

Front

What units are commonly used to measure weight with a spring scale?

Back

Newtons (N) or pounds (lb).

Front

How does a spring scale measure weight?

Back

By using a spring that stretches in response to the weight of an object, allowing the force to be measured.

Front

What is the relationship between mass and weight?

Back

Weight is the force exerted by gravity on an object, while mass is the amount of matter in the object.

Front

What is the formula for calculating weight?

Back

Weight (W) = mass (m) × gravitational acceleration (g).

Front

What is gravitational acceleration on Earth?

Back

Approximately 9.81 m/s².