My percent error is -2.9 %. My mass is 1.70 kg
My accepted value for mass was 1.75 kg.
Is this percent error good or bad for the lab?

Awoman holds a book by placing it between her hands such that she presses at right angles to the front and back covers. the book has a mass of m = 1.8 kg and the coefficient of static friction between her hand and the book is μs = 0.67. no attempt 50% part (a) what is the weight of the book, fgb in newtons?