t-dard Ecercie Satellite in Orbit 2) Now, three masses m -4.2 kg, 12.6 kg and -8
ID: 2303620 • Letter: T
Question
t-dard Ecercie Satellite in Orbit 2) Now, three masses m -4.2 kg, 12.6 kg and -8.4 kg hang from three Identical springs in a motionless elevator The springsaha the same spring constant that you just calculated abave What Is the force the top spring exerts on the top mass? 246.96 3) what is the distance the lower spring is stretched from its equilibrium length? 26 Subm 4) Now the elevator is moving downward with a velocity of v-3 ms but accelerating upward with an acceleration of a 4.5 ms (Note: an upward acceleration when the elevator is moving down means the elevator is slowing down.) what is the orce the bottom spring exerts on the bottom mass? Submit 5) What is the distance the upper spring is extended from its unstretched length? cmSubmitExplanation / Answer
1] T1 = (m1+m2+m3)g = (4.2+12.6+8.4)*9.8 = 246.96 N
3] x = m3g/k = 8.4*9.8/k put the value of spring constant k and multiply by 100 to get answer in cm
4] T3 - m3g = m3a
T3 = 8.4*(9.8+4.5) = 120.12 N
5] x = [ (m1+m2+m3)*(g+a)]/k = (4.2+12.6+8.4)*(9.8+4.5)/k = 360.36/k put the value of spring constant k and multiply by 100 to get answer in cm
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