A 26 gram arrow fired from a bow has a speed of 80m.s. The energy in the arrow came from work done by the bow that acted overa a 1m distance. What average force acted on the arrow over this distance
mass = 26g = 0.026 kg
Work done by force = Total energy of arrow = (1/2)*mass of arrow*(velocity)*(velocity)
=> F*distance = 0.5*0.026*80*80
=> F = 0.5*0.026*80*80/1
Hence, Average force acting = 83.2 N
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