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
Alright — let's do this. Step 1: Determine the force required to lift the mass. The force (F) needed to lift the mass is equal to its weight. F = m · g Given: Mass (m) = 20 kg Acceleration due to gravity (g) = 10 m/s^2 F = 20 kg × 10 m/s^2 F = 200 N Step 2: Calculate the power developed by the boy. Power (P) is the product of force and velocity. P = F · v Given: Force (F) = 200 N Velocity (v) = 5 m/s P = 200 N × 5 m/s P = 1000 W The power developed by the boy is 1000 W. This corresponds to option (D). The final answer is D) 1000 W. Got more? Send 'em.