(this question is from an algebra based physics class) A spring ( K= 100 N/n) is

Question

(this question is from an algebra based physics class)

A spring ( K= 100 N/n) is attached to a post on a table (h=0.9) high. It is compressed 5 cm and a mass (m1= 5kg) is placed next to the spring, and is released from rest. The friction between the mass and the table is negligible. It collides and sticks to a second mass (m2= 5kg) which is at rest at the end of the table. Both masses fly off the end of the table and land x from the table.

What is the kinetic energy of the mass (m1=5kg) transferred by the spring when it is fully extended?

Explanation / Answer

Kinetic energy of the mass transferred by the spring=energy stored in spring due to compression=(1/2)kx^2=(1/2)*100*0.05^2=0.125 Joule

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