Physics, asked by yasirali3012, 1 year ago

A lift is moving downwards with a constant acceleration a=g. A body of mass m kept on the floor is pulled horizontally.

Answers

Answered by NidhraNair
1
helllo.. ☺ ...
♪\(*^▽^*)/\(*^▽^*)/
Firstly... let's complete your question..

À LÌFT ÌS MÓVÌNG DÓWNWÀRDS WÌTH ÀN ÀÇÇÈLÈRÀTÌÓN ÈQÚÀL TÓ THÈ ÀÇÇÈLÈRÀTÌÓN DÚÈ TÓ GRÀVÌTÝ À BÓDÝ ÓF MÀSS M KÈρT ÓN THÈ FLÓÓR ÓF THÈ LÌFT ÌS ρÚLLÈD HÓRÌZÓNTÀLLÝ . ÌF THÈ ÇÓÈFFÌÇÌÈNT ÓF FRÌÇTÌÓN ÌS Ú , THÈN THÈ FRÌÇTÌÓNÀL RÈSÌSTÀNÇÈ ÓFFÈRÈD BÝ THÈ BÓDÝ ÌS ?

N = normal,
m = mass of object,
a = acceleration of lift

mg - N = ma
N = ma - mg
a = g
so, N= 0

friction = u.N (N = 0)
hence friction = u.0
= 0
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