Problemas
Question 12 (1 point) Joe lifts a 5Kg box from a step that is 0.2m high to a shelf that is 1.75m.How much work did Joe accomplish? 43.1 b 85.75 J c 75.95 J d 98.
Roztwór
Daniel
maestro · Tutor durante 5 años
4.1
(369 Votos)
Respuesta
The work done by Joe is 85.75 J.
Explicación
## Step 1The work done by Joe is calculated using the formula for work, which is the product of the force applied and the distance over which the force is applied. In this case, the force is the weight of the box, and the distance is the height difference between the step and the shelf.### **Work = Force x Distance**## Step 2The weight of the box is calculated by multiplying its mass by the acceleration due to gravity. The mass of the box is 5 kg and the acceleration due to gravity is approximately 9.8 m/s².### **Weight = Mass x Gravity**## Step 3The height difference between the step and the shelf is calculated by subtracting the height of the step from the height of the shelf. The height of the step is 0.2 m and the height of the shelf is 1.75 m.### **Height Difference = Height of Shelf - Height of Step**## Step 4Substitute the calculated values into the formula for work.### **Work = Weight x Height Difference**