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
Here's the solution for Question 33: Step 1: Identify the given values. Mass of the object, m = 20 kg Velocity, v = 5 m/s Acceleration due to gravity, g = 10 m/s^2 Step 2: Calculate the force required to lift the mass. In a single string pulley system, to lift a mass at a constant velocity, the force applied must be equal to the weight of the mass. F = Weight = m × g F = 20 kg × 10 m/s^2 F = 200 N Step 3: Calculate the power developed by the boy. Power (P) is the product of force (F) and velocity (v). P = F × v P = 200 N × 5 m/s P = 1000 W The power developed by the boy is 1000 W. The correct option is D) 1000W. Last free one today — make it count tomorrow, or type /upgrade for unlimited.