spring mass problem

IIT JEE 2015 Tutorials › Mechanics questions › spring mass problem

two blocks are kept on a smooth horizontal table.... they are interconnected by an ideal spring of spring constant k..... A force is aplied as shown....... findthe max. compression of the spring.

Ans: m1F/(2k(m1+m2))

#Physics #Mechanics

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eureka123 ·2009-03-13 20:19:09

Elongation max when instantaneously at rrest

a_cm=F/m1+m2
Apply pseudo on both blocks now

F_net2=F-m2a
F_net1=m1a
Displace m1 by x1 and m2 by x2
W2=(F-m2a)x2
W1=(m1a)x1

Î”W_net=Î”U
=>(F-m2a)x2+(m1a)x1=k(x1+x2)²/2

x1+x2=2Fm1/k(m1+m2)

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skygirl ·2009-03-21 19:25:14

yup eureka is right....

i think question has some typo....

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spring mass problem

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