What is the number of times that the machine increases the input force called?

A                           B

input forcethe force exerted on a machine

work input   the work done on a machine as the input force acts through the    input distance

output distancethe distance an output force acts through a machine

mechanical advantagethe number of times that a machine increases an input force

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg