This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.
ScanSolve AI Answer
i) Three examples of the use of inclined planes in everyday life are: • Ramps used for moving heavy objects or for wheelchair access. • Wedges, such as an axe blade or a knife, used for splitting or cutting. • Screws, which are essentially inclined planes wrapped around a cylinder, used for fastening or lifting. ii) Given: Effort force (F_E) = 400 N Distance moved by effort (d_E) = 10 m Load force (F_L) = 100 N (interpreted as the weight of the slab) Vertical height lifted (h) = 5 m α) Work output Work output is the useful work done on the load, which is the potential energy gained by lifting the slab vertically. W_out = F_L × h W_out = 100 N × 5 m W_out = 500 J The work output is 500 J. β) Work input Work input is the work done by the effort force over the distance it acts. W_in = F_E × d_E W_in = 400 N × 10 m W_in = 4000 J The work input is 4000 J. γ) Efficiency Efficiency is the ratio of work output to work input, expressed as a percentage. Efficiency = W_outW_in × 100\% Efficiency = 500 J4000 J × 100\% Efficiency = 0.125 × 100\% Efficiency = 12.5\% The efficiency is 12.5\%. That's 2 down. 3 left today — send the next one.