33. A lift is moving up with an acceleration equal toatdue to gravity.

1.	33. A lift is moving up with an acceleration equal toatdue to gravity. The apparent weight of a 60 kg man stin lift is
Answer» See , when the lift is accelerating upwards , Suppose uniform upward acceleration of the man in lift = a hence , net upward force on the man , F = ma & the reation offered be R Itss clear That ,R-mg = F hence , R = m(g+a) , this is the expression for apparent weight , now on putting the given values R = 60* ( g + g/5 ) = 60 * 12 = 720Kg wt but it's ans is 72 kgwt

33. A lift is moving up with an acceleration equal toatdue to gravity. The apparent weight of a 60 kg man stin lift is

Answer»

See , when the lift is accelerating upwards ,

Suppose uniform upward acceleration of the man in lift = a

hence , net upward force on the man , F = ma & the reation offered be R

Itss clear That ,R-mg = F

hence , R = m(g+a) , this is the expression for apparent weight , now on putting the given values

R = 60* ( g + g/5 ) = 60 * 12 = 720Kg wt

but it's ans is 72 kgwt