barrel is 70kg, and height of dock is 2 meters.
How much work do you do when lifting the barrel?
was sure if you convert the 70kg to newtons, then multiply it by the 2 meters??
Work= mass*g*distance. Yes, convert it.
To calculate the work done when lifting the barrel, you need to use the formula:
Work = force * distance
In this case, the force can be calculated by multiplying the mass of the barrel by the acceleration due to gravity (g). The value of g is approximately 9.8 m/s^2.
First, convert the mass of the barrel from kilograms to newtons by multiplying it by the acceleration due to gravity.
Force = mass * g
Force = 70 kg * 9.8 m/s^2
Next, calculate the work done by multiplying the force by the distance the barrel is lifted.
Work = Force * distance
Work = (70 kg * 9.8 m/s^2) * 2 meters
Now, you can solve for the work:
Work = 1372 N * 2 m
Work = 2744 Joules
So, the work done when lifting the barrel is 2744 Joules.