A block of mass 2kg is moving with speed v_(0) towards a massles sunstretched spring (K=10N/m). It is found that for maximum speed v_(0)=sqrt(6.4)m/s, the block compresses the spring, stops at that position and does not return back. Friction coefficient at surface is mu=1/x. Value of x is

A block of mass 2kg is moving with speed v_(0) towards a massles sunst

1.	A block of mass 2kg is moving with speed v_(0) towards a massles sunstretched spring (K=10N/m). It is found that for maximum speed v_(0)=sqrt(6.4)m/s, the block compresses the spring, stops at that position and does not return back. Friction coefficient at surface is mu=1/x. Value of x is
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