A lift moves vertically up with an acceleration a. Force exerted by a person of mass M on the floor of the lift is

Question

A lift moves vertically up with an acceleration a. Force exerted by a person of mass M on the floor of the lift is (A)  Ma  (B)  Mg  (C)  M (g +a)  (D)  M (g -a)

Tardigrade Admin · Accepted Answer

<img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/physics/8082dcea178ee06faa492d9eab92a0e8-.jpeg" /> Using Newton’s second law, Ma=R-Mg R=M(g+a) ∴ Force exerted by a person of mass M on the floor of the lift =R=M(g+a)

Q. A lift moves vertically up with an acceleration $a$ . Force exerted by a person of mass $M$ on the floor of the lift is

$M_{a}$

$M g$

$M (g + a)$

$M (g - a)$

Using Newton’s second law,
$M a = R - M g$
$R = M (g + a)$
$∴$ Force exerted by a person
of mass $M$ on the floor of the
lift $= R = M (g + a)$

Q. A lift moves vertically up with an acceleration a. Force exerted by a person of mass M on the floor of the lift is

Ma​

Mg

M(g+a)

M(g−a)