Here's a neat trick. If your average ceramic bowl has a mass of 200 g, what is the difference in Newtons between the weight of the bowls on the top of her head before and after she does the trick?
Details and assumptions
The acceleration of gravity is −9.8 m/s2.
To determine the difference in Newtons between the weight of the bowls on top of her head before and after she does the trick, we need to calculate the weight of the bowls in each scenario using the formula:
Weight = Mass × Acceleration due to gravity
Given that the average ceramic bowl has a mass of 200 g (or 0.2 kg) and the acceleration due to gravity is -9.8 m/s², we can calculate the weight of the bowls before and after the trick.
Weight_before = 0.2 kg × -9.8 m/s²
Weight_after = 0 kg × -9.8 m/s² (assuming the bowls are no longer on her head after the trick)
Since the weight of an object is given in Newtons (N), the weight of the bowls before and after the trick can be expressed in Newtons using the formula:
Weight_in_Newtons = Weight × -1
Therefore, the difference in Newtons between the weight of the bowls on top of her head before and after the trick is:
Difference = Weight_before - Weight_after
Difference = (0.2 kg × -9.8 m/s²) - (0 kg × -9.8 m/s²)
Difference = 1.96 N - 0 N
Difference = 1.96 N
So, the difference in Newtons between the weight of the bowls on top of her head before and after the trick is 1.96 N.