The resistance force is 651 N
Explanation:
The mechanical advantage (MA) of a machine is given by:
[tex]MA=\frac{Load}{Effort}[/tex]
where
[tex]Load[/tex] is the force in output to the machine - it is also called resistance force
[tex]Effort[/tex] is the force in input to the machine
For the person and the wheelchair in this problem, we have:
[tex]Effort = 93 N[/tex] (force applied in input)
MA = 7 (mechanical advantage)
Solving the equation, we find the resistance force:
[tex]Load = MA\cdot Effort = (7)(93)=651 N[/tex]
Learn more about simple machines:
brainly.com/question/5352966
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