A spring of stiffness K is kept compressed by applying horizontal force on a block of mass m by a length x0=(mgk) as shown in the figure. If the force F is withdrawn suddenly, the block oscillates and finally stops. In consequence, fractional loss of energy is equal to 50% of the initial potential energy stored in the spring. The coefficient of friction between block and ground is found as [x]−12 ; what is x? ___

A spring of stiffness K is kept compressed by applying horizontal forc

1.	A spring of stiffness K is kept compressed by applying horizontal force on a block of mass m by a length x0=(mgk) as shown in the figure. If the force F is withdrawn suddenly, the block oscillates and finally stops. In consequence, fractional loss of energy is equal to 50% of the initial potential energy stored in the spring. The coefficient of friction between block and ground is found as [x]−12 ; what is x? ___
Answer» A spring of stiffness K is kept compressed by applying horizontal force on a block of mass m by a length $x_{0} = (\frac{m g}{k})$ as shown in the figure. If the force F is withdrawn suddenly, the block oscillates and finally stops. In consequence, fractional loss of energy is equal to $50 %$ of the initial potential energy stored in the spring. The coefficient of friction between block and ground is found as $[x]^{\frac{- 1}{2}}$ ; what is x? ___

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