Basic: NLM ground frame doubt
I had a doubt while solving this problem. I'm making some mistake while doing this from the ground frame. Can someone solve this from the ground frame and send so that I can check? Thanks!
17 Replies
@Gyro Gearloose
Note for OP
+solved @user1 @user2... to close the thread when your doubt is solved. Mention the users who helped you solve the doubt. This will be added to their stats.Why do from ground
like im not very comfortable with doing from ground frame in such qs
so i wanted to learn
hope it helps
consider a pseudo force
alright
can you please send your approach? in g frame
nvm its hard to think from g frame
ill solve it myself
you need the wedge constraint here
since the block is staying on the wedge (atleast for sometime) its relative acceleration along the normal must be zero
this is the fig
consider these 2 points
B is on the wedge and A is on the block
if the acceleration in normal direction (vectors have been shown in the fig) of both of them are not same
then some deformation will take place OR block will leave the wedge
hence acceleration of wedge along normal must be equal to acceleration of blovk along normal
now acceleration of wedge along normal is just component of acceleration of wedge along normal
we need a_n
which is just 5cos(53)
or 3
hence acceleration of block along normal shld be 3 as well
now just make the FBD of the blok
consider forces along normal direction only
N - 40 = 5 x 3
hence N = 55N
@Aetherfly got it.
thank you so much!
+solved @Aetherfly
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