Question

Question #18dea

Answer 1

The reactionary force `R` exerted by the man on the floor of elevator is given by

`R=m(g+f)`

where m is the mass of the man f is the acceleration of the elevator `(f =0 " here")` and g is the acceleration due to gravity `g=10ms^-2`.

So `R=m(g+f)=84kgxx10ms^-2=840N`