the question is an astronaut on the moon wishes to measure the local values ofg

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the question is
an astronaut on the moon wishes to measure the local values ofg by timing pulses traveling down a wire that has a large objectsuspended from it. assume a wire of mass 4.00g is 1.60m long andhas a 3.00kg object suspended from it. a pulse requires 36.1ms totraverse the length of the wire. calculate gravitationalacceleration on the moon from these data. you may neglect the massof the wire when calculating the tension in it.
an astronaut on the moon wishes to measure the local values ofg by timing pulses traveling down a wire that has a large objectsuspended from it. assume a wire of mass 4.00g is 1.60m long andhas a 3.00kg object suspended from it. a pulse requires 36.1ms totraverse the length of the wire. calculate gravitationalacceleration on the moon from these data. you may neglect the massof the wire when calculating the tension in it.

Explanation / Answer

speed = dist / time = 1.60 / 0.0361 =  44.32 m/s .    andnow         v2 =   tension * length / mass ofwire .           44.322   =   T * 1.60 /0.004 .       T = 4.911 Newtons .       T =mg      or         4.911 = 3.00 *g .          g =   1.64 m/s2

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