hgpt

I'm not able to use a webcam and a tracker software. Only sensors!

There's one other thing: the bag is fixed to the floor with a spring.
Some known values are:

- mass of the punch

- mass of the bag

- the distance R at which the puncher is hitting relative to the tip of the bag

- acceleration on all 3 axis (by using an accelerometer)

Here's the problem:

You have a ceiling fixed punch bag. Find the minimum sensor setup to determine:
1. The force of a punch in the bag

Limitations:
1. Sensors must only be attached to the bag. NO sensor can be attached to the person.

2. The bag is punched in a limited vertical area.

Justify answer with sensors and calculations.

Can you solve it?