Question

3. (35 pts) A box (mass - 2.3 kg will be launched on a horizontal surface using a spring The spring has a spring constant of 35 N/m. The box is pressed against the spring, compressing it by 1.05 m. The coefficient of kinetic friction between the box and the surface is 0.25. A) How fast is the box moving when it leaves the spring? B) How far from the compressed spring does the box slide? Pictorial Representation What is the System? Potential Energies? Nonconservative forces? External Forces? Is Mechanical Energy conserved? Mathematical Representation

please solve on paper and show equation your gonna use

Answer 1

1.OSm 3Sn Nahural length pring Stop tomfresed mnann m X-4-05m C Ae Free body dy AN ftrichon force kinche codficint fafnckoo wnere * Enerpy conservaken blo A B [Patental enegg spiKin t of block + frichondls loLT => (as)(es) 3) (v) +0-20)(23)(9-s) (1-os) ). epeed of box when ut eaves the SPng 3.410 6msv Ener's Potenhiatenergy of png K ConserVaton blw AxC frichond loss 0(as)(025) (23e) (7-8) -d Here distance traveltled by the bor foom the Comprcked e Ac * -SyctempringtBox) .Potenhal Energies + -Potenkel Enery of springk Non-Conservahve fore frichon force f uma? Wwegt of block frickon tore External Arce bok (mg) Muhaneal Enery not consernd becaute fricton does negatue nk which decreaseehe Kinehe energy without addng any Potntial enery to make up for the less