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- A man pushes very hard for several seconds on a heavy rock, but the rock does not budge. Has the man done any work on the rock?You and your friend Gandalf are mowing lawns for extra spending money. Gandalfpushes his mower 20 m and applies a force of 100 N. If you apply a force of 40 N, howfar must you push your mower so that the work you do equal Gandalf’s?A spring has a natural length of 20cm. A 40N force is required to stretch (and hold the spring) to a length of 30cm. How much work is done in stretching the spring from 35cm to 38cm?
- An archer pulls her bowstringback 0.400 m byexerting a force thatincreases uniformly fromzero to 230 N. (a) Whatis the equivalent springconstant of the bow? (b) How much work does the archer doin pulling the bow?er, Energy X OLSdg9M842RQODWOSxb XnpObp9nC.JRaqVw9x56nYqEicKBWNjcg/viewform?hr_submission=Cho Retum Man 2-Foot... A student applies 490 Newtons of force to push a 100 kilogram box up a 10 meter high ramp. How much work did the student perform if the distance of the ramp is 20 meters? (Hint: Some of this information is extra information.) * O 2000 Joules O 9800 Joules 200 Joules O 4900 JoulesCalculate the mechanical potential energy.
- need Answer only for (d)An object attached to the free end of a horizontal spring of constant 650 N/m is pulled from a position 16 cm beyond equilibrium to a position 18 cm beyond equilibrium. Calculate the work ? that the spring does on the object. (Answer in Joules)A spring has a natural length of 20 cm. A 40N force is required to stretch (and hold the spring) to a length of 30 cm. How much work is done in stretching the spring from 35cm to 38cm?