14 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 is the velocity of the block
u before collision?
instead of 00 kyu hoga?
gravity accelrate karega na
picture dekho
for some reason unhone dono block and bob ka
u liya hua hai
why is the block ufor every action equal and opposite reaction
the collision hasn't even happened yet
what action
point to hai
ruko
hn u are right kyu hi ayega u
By energy conservation, the velocity of m is sqrt(2gl) and hence the velocity of M is -sqrt(2gl). Since coeffecient of restitution is 1/3, 2sqrt(2gl)=1/3.(2v) or v=sqrt(2gl/9). From here the max. height attained is l/9
Because v_com=0 there is no external horizontal force on block, bob and string system.
Also the tension pushes the block forward as the bob goes down.
Yes just momentum conservation, energy conservation and definition of coefficient of restitution
ahhh
the tension explanation makes sense
+solved @SirLancelotDuLac
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