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Physics-

General

Easy

Question

Two blocks of masses $m subscript 1 end subscript$ and $m subscript 2 end subscript$ are connected with a massless spring and placed over a plank moving with an acceleration ‘a’ as shown in figure. The coefficient of friction between the blocks and platform is $µ$ .

spring will be stretched if $a > µ g$
spring will be compressed if $a µ g$
spring will neither be compressed nor be stretched for $a µ g$
spring will be in its natural length under all conditions

The correct answer is: spring will be in its natural length under all conditions

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