# ~15 points KatzPSEf1 9.P.052My NotesAsk Your Teacherhorizontal spring with force constant k = 650 N{m is attached to wall at

###### Question:

~15 points KatzPSEf1 9.P.052 My Notes Ask Your Teacher horizontal spring with force constant k = 650 N{m is attached to wall at one end and to block of mass m = 2.15 kg at the other end that rests on horizontal surface The block is released from rest from position 4.30 cm beyond the spring's equilibrium position. If the surface is frictionless_ what is the speed of the block as it passes through the equilibrium position? m/s (b) If the surface is rough and the coefficient of kinetic friction between the box and the surface what is the speed of the block as it passes through the equilibrium position? mfs 0.250_ Need Help? Road It ~15 points KatzPSEi1 P039 My Notes Ask Your Teacher shopper weighs 4.00 kg of apples on supermarket scale whose spring obeys Hooke's law and notes that the spring stretches distance of 2.50 cm What will the spring' extension be if 5.50 kg of oranges are weighed instead? cm (b) What is the total amount of work that the shopper must do to stretch this spring tota distance of 8.50 cm beyond its relaxed position? Need Help? Read

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