how to get the weight of an iolab

To get the weight of an IOLab, hang it from the force sensor, record a few seconds of data, and read the steady force value from the graph. In the lab manual, this is described as lifting the device by the force sensor and using the “Weigh the IOLab device” data to record the weight.

Simple steps

1. Attach the screw eye or use the force sensor hook, depending on your kit setup.
2. Hold the IOLab still in the air for a few seconds.
3. Open the recorded force graph and find the flat, steady section.
4. Read that force value as the device’s weight. The lab instructions say the force holding the IOLab up equals its weight.

Why this works

The force sensor measures the upward support force while gravity pulls downward, so when the device is hanging motionless, the measured force matches the weight. This is the standard method used in IOLab labs for mass determination and weight measurement.

Example

One lab video shows an average force of about 1.959 N while the device is held still, then uses m=F/gm=F/gm=F/g to estimate the mass. Another lab writeup uses the same idea to find a mass of 0.195 kg from a measured force of 1.917 N.

Practical tip

If the graph is noisy, zoom in and average the most stable part of the hanging-force segment instead of using a single point. That usually gives the cleanest weight reading.

TL;DR: hang the IOLab from the force sensor, record a short stable interval, and use the flat force value on the graph as its weight.