a force of 100 N pushes a wedge of 0.20 m into a log if the work done on the log by the ax is 55 J what is the efficiency of the wedge
To find the efficiency of the wedge, we need to first calculate the work done on the wedge and then divide the work done on the log by the work done on the wedge.
The work done on the wedge can be found using the formula:
Work = Force × Distance
Given:
Force on the wedge (F) = 100 N
Distance pushed by the wedge (d) = 0.20 m
Work done on the wedge (W_wedge) = Force × Distance
= 100 N × 0.20 m
= 20 J
Now we can calculate the efficiency using the formula:
Efficiency = (Work done on the log / Work done on the wedge) × 100%
Given:
Work done on the log (W_log) = 55 J
Work done on the wedge (W_wedge) = 20 J
Efficiency = (W_log / W_wedge) × 100%
= (55 J / 20 J) × 100%
= 2.75 × 100%
= 275%
Therefore, the efficiency of the wedge is 275%.