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A massless spring with force constant k launches\na ball of mass m . In order for the ball to reach a\nspeed u , by what displacement s should the\nspring be compressed?please give process

theja , 10 Years ago
Grade 9
anser 1 Answers
Sunil Kumar FP

Last Activity: 10 Years ago

suppose the spring is ompressed such that it reaches at height h at some intermediate level.

at that point applying law of conservation of energy
ke + pe=initial energy stored in the spring
1/2mv^2+1/2mv^2=ks^2
mv^2=ks^2
s=v under root m/k

thanks and regards
sunil kr
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