What instrument is used in the lab to measure force?

• A. Force Meter
• B. Ruler
• C. Thermometer
• D. Stopwatch

Answer: (A)

Measuring force relies on a device that converts a push or pull into a readable force value. A force meter, often a spring scale, does this by using a spring whose extension changes as you apply force. The scale is calibrated in newtons, and the reading follows F = kx, so the more you push or pull, the higher the force reading. This direct measurement of how hard something is pushed or pulled makes it the appropriate instrument for quantifying force in experiments.

The other tools count for different quantities: a ruler measures length, a thermometer measures temperature, and a stopwatch measures time. They don’t directly quantify force, which is why they aren’t used to measure force.