As shown in fig, a block of mass m = 0.40 kg is moving on a frictionless surface at a speed of v = 0.50 m/s. A block of force constant k = 750 N/m comprised the spring and becomes rest for a instant. How much spring wil be compressed t
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From conservation of energy,
KE lost by the block =PE gained by the spring
so
2
1
mv
2
=
2
1
kd
2
or d=
k
mv
2
=
gk
Wv
2
=v
kg
W
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