13. A crowbar is used to lift a packing case. The load is 200mm from the fulcrum and an effort o 50N is applied 125m to the other end of the crowbar. Determine the load in newtons. 50N^ast 1.25M/ 0.2M=312.5N

## Step 1: Understand the problemIn this physics problem, we are dealing again with a situation where the crowbar works like a lever. We already know how these machines function by the law of conservation of energy and leverage.## Step 2: Apply the law of leverageThe law of leverage presents the preservation of energy in the system of a simple machine when we are magnifying a small force (or effort) into a significant outcome (or load). It simply states: "effort moment is equal to the load moment". "Moment" is synonymous in this sense with the phrase "force times force arm", i.e., the 'product of the force and its distance from the fulcrum'. So, more formally speaking, this law dictates that the product of effort and the corresponding effort distance (effort arm) has to be equal to the product of the load and its corresponding distance/load arm (Effort * Effort Arm = Load * Load Arm)## Step 3: Insert values into formulaIn our given problem, we know the effort (50N), the effort arm (1.25m), and the load arm (200mm = 0.2m). Our task is to find out the value of the load.To find the value of the load, we can arrange the formula from the law of leverage as: ### .## Step 4: Perform the calculationNext, insert the values given in the question into the formula as follow:###