a box of mass m = 12.6 kg is released from rest (at position A) at...

Question

Question

a box of mass

m = 12.6 kg

is released from rest (at position A) at the top of a 30.0

Answer 1

Answer #1

vb^2=2*gsin(theta)*d=2*9.8*0.5*4.4

vb=6.56 m/s

At point C

enitire KE of the system = spring potenial energy

0.5*k.0.28^2=12.6*9.81*(4.4+0.28)*sin(30)

k=7378.52 N/m

Answer 2

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