First proceed to the following webpage: https://phet.colorado.edu/sims/html/forces-and-motion-basics/latest/forces-and-motion- basics_en.html

1. (COMPLETED)

Object	Force Friction	Mass of Object (kg)	Coefficient of Static Friction
Box	125	50	0.255
Box and Child	225	90	0.255
Box and Man	325	130	0.255
Box and Can	375	150	0.255

2. (COMPLETED)

125/(9.8 x 50) = 0.255

225/(9.8 x 90) = 0.255

325/(9.8 x 130) = 0.255

375/(9.8 x 150) = 0.255

The average is 0.255

3. (NEED HELP!!) Using similar methods as in questions #1 and #2, estimate the mass of the object in the present, the mystery mass. Include a description of the process and the mathematics of estimating the mass. Use the average coefficient of friction written in #2 to solve for the mystery mass.