No Pseudo Force

I personally dont like pseudo force.. (Used to love it when I was in class xi) but when i came to class xii.. i started to hate it..
Yeah there are some problems which are solved in a flash by using pseudo force.. but there are some where u will get confused a lot!

So giving a simple problem.. and want to see if u can solve it without pseudo force...

The Lift is falling down with accleleariton A

8 Answers

1
voldy ·

what are we supposed to fnid?

1
ith_power ·

here except pseudom force we have to take acceleration w.r.t. ground frame, i.e. a-A and a+A.

1
skygirl ·

acceleration of the two masses m and M.

62
Lokesh Verma ·

ith power u are right.. whoever told me the solution privately have used pseudo force.. (even without knowing that they were!)

1
skygirl ·

btw bhaiya,, i still din get this widout pseudo force...
will u give the full solution plz?

62
Lokesh Verma ·

The only reason is incorrect constraint equation....

Could you try to write them?

1
skygirl ·

T-Mg=-Ma ---1
T-mg=ma ----2

now we get a from here...

since the lift is fallinf down with A...

acc of M is a-A ... and the other one a+A.

1
voldy ·

let the system fall with an acceleration a, and inside the elevator let the accn of system be A , thus assuming M>m , we get acn of M = a+A and accn of m =a-A , rihgt?

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