A Block (Mass = 4

question 76

Multiple Choice

A block (mass = 4.0 kg) sliding on a horizontal frictionless surface is attached to one end of a horizontal spring (k = 100 N/m) which has its other end fixed. If the maximum distance the block slides from the equilibrium position is equal to 20 cm, what is the speed of the block at an instant when it is a distance of 16 cm from the equilibrium position?

• A) 71 cm/s
• B) 60 cm/s
• C) 80 cm/s
• D) 87 cm/s
• E) 57 cm/s

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