Question #65b41

1 Answer
Matt
Dec 21, 2017

0.086N

Explanation:

This is easiest to solve by recognising that the nurse is doing work on the mass which results in a transfer of energy into kinetic energy
#FtimesS= 1/2mv^2#
Rearranging
#F=(mv^2)/(2S)#

Substituting in:
#F=((3times10^-3) times (1.4^2))/(2 times 0.034)=0.086N#

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