To calculate the percentage of work input used to overcome friction, we need to determine the work done by the effort and the work done in overcoming the load.
Work done by the effort (W_effort) = Effort x Distance moved by effort
Work done by the effort (W_effort) = 105N x 45 = 4725 N·m
Work done to overcome the load (W_load) = Load x Distance moved by load
Work done to overcome the load (W_load) = 4500N x 45 = 202500 N·m
Total work input (W_total) = W_effort + W_load
Total work input (W_total) = 4725 N·m + 202500 N·m = 207225 N·m
Percentage of work input used to overcome friction = (W_load / W_total) x 100%
Percentage of work input used to overcome friction = (202500 N·m / 207225 N·m) x 100% = 97.71%
Therefore, 97.71% of the work input is used to overcome friction.
A lever system of velocity 45 overcomes a lpad of 4500N when an effort of 105N is applied. Calculate percentage of work input which is used to overcome friction
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