A 20-Kg Block Situated on a Frictionless Incline Is Connected to to a Light

question 22

Multiple Choice

A 2.0-kg block situated on a frictionless incline is connected to a light spring (k = 100 N/m) ,as shown.The block is released from rest when the spring is unstretched.The pulley is frictionless and has negligible mass.What is the speed of the block when it has moved 0.20 m down the plane?

• A)76 cm/s
• B)68 cm/s
• C)60 cm/s
• D)82 cm/s
• E)57 cm/s

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