For this case we have to by definition, according to Newton's second law that:

Where:
F: Strength
m: Mass
a: Acceleration
In this case we have to:

Where:
W: It is the weight
m: It's the dough
g: It is the acceleration of gravity
We have as data that:

So:

The mass is 1.02 kg
Answer:
The mass is 1.02 kg