Question
Suppose you needed to raise a 252 kg mower a distance of 11.9 cm above the...
Suppose you needed to raise a 252 kg mower a distance of 11.9 cm above the ground to change a tire. If you had a 2.1 m long lever, where would you place the fulcrum if your force was limited to 339 N? The distance is measured from the side that the 339 N force is applied. Assume that the mass of the lever is negligible.
Answers
Solution: Consider the formula for Torque due to mower Here Radius i.e. 11.9Cm F-F orce Force is given as F (252Kg)x(9.8m/s) Substitute 2469.6N for F and 11.9Cm for r in equation (1) T = (2469.6M×1 11.9% 10 m T-293.88Nm Consider the formula for Toraue due to fulcrum Substitute 339V for F and 293.88Nm for T in equation (2) 293.88Nm (339N)xr 293.88Nm 339N 0.8669m Thus, the distance is 0.8669m
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