012 (part 1 of 4) 10.0 points
A massless spring with force constant
536 N/m is fastened at its left end to a vertical
wall, as shown below.
The acceleration of gravity is 9.8 m/s
Initially, the 6 kg block and 3 kg block rest
on a horizontal surface with the 6 kg block in
contact with the spring (but not compressing
it) and with the 3 kg block in contact with the
6 kg block. The 6 kg block is then moved to
the left, compressing the spring a distance of
0.4 m, and held in place while the 3 kg block
remains at rest as shown below
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013 (part 2 of 4) 10.0 points
The 6 kg block is then released and accelerates
to the right, toward the 3 kg block. The
surface is rough and the coefficient of friction
between each block and the surface is 0.4 . The
two blocks collide, stick together, and move
to the right. Remember that the spring is not
attached to the 6 kg block.
Find the speed of the 6 kg block just before
it collides with the 3 kg block.
Answer in units of m/s.
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014 (part 3 of 4) 10.0 points
Find the final speed of both blocks (stuck
together) just after they collide.
Answer in units of m/s.
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015 (part 4 of 4) 10.0 points
Find the horizontal distance the blocks move
before coming to rest.
Answer in units of m.
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No rounding on any answers