A person of mass 60 kg stands inside a 940 kg lift. The lift accelerates upward at 1 m s⁻². Find supporting cable tension using g=10 m s⁻².
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Question

A person of mass 60 kg stands inside a 940 kg lift. The lift accelerates upward at 1 m s⁻². Find supporting cable tension using g=10 m s⁻².

G1 Physics · Accepted Answer

Cable accelerates combined lift+person mass M=940+60=1000 kg upward. Newton's law gives T−Mg=Ma, so T=M(g+a)=1000(10+1)=11000 N. Answer: C.