Connected Bodies - The Lift Problem (AQA A-Level Mathematics): Flashcards

Newton's second law of motion

Weight $Mg$ (down), tension $T$ (up)

Weight $mg$ (down), normal force $N$ (up)

$T = M(g + a)$ ($a$ positive up, negative down)

$N = m(g + a)$ ($a$ positive up, negative down)

$N = mg$ (equals actual weight)

$N = m(g + a)$, feels heavier

$N = m(g - |a|)$, feels lighter

$N = 0$, weightlessness

Heavier