Two strong magnets on opposite sides of a small table are shown. The long-range attractive force between the magnets keeps the lower magnet in place. Suppose the weight of the table is 19.7 N, the weight of each magnet is 4.17 N, and the magnetic force on the lower magnet is 5.39 times its weight. Find the magnitude of the force of the lower magnet on the upper magnet.
The attractive force is 5.39N as given in the problem. The lower magnet pulls on the upper with that force, come hell or high water.
thank you
do you know how i would figure out the normal forces of the table to each of the magnets?
A basketball player runs down the court, following the path indicated by the vectors A, B, and C in Figure 3-35. The magnitudes of these three vectors are: A = 12.0 m, B = 20.0 m, and C = 7.0 m. Let the +x axis point to the right and the +y axis point to the far side of the court.
To find the magnitude of the force of the lower magnet on the upper magnet, we can use the relationship between the weight, magnetic force, and the force of gravity.
Let's break down the problem step by step:
1. Calculate the weight of the lower magnet:
Given that the weight of each magnet is 4.17 N, and the lower magnet's weight is 5.39 times its weight, we can calculate the weight of the lower magnet:
Weight of the lower magnet = 4.17 N * 5.39 = 22.48 N
2. Find the net downward force on the table:
The net downward force on the table is the sum of the weights of the table and the magnets, which is:
Net downward force = weight of the table + weight of the magnets
= 19.7 N + 2*(4.17 N) (since there are two magnets)
= 19.7 N + 8.34 N
= 28.04 N
3. Calculate the magnitude of the force of the lower magnet on the upper magnet:
Since the net downward force on the table is balanced by the long-range attractive force between the magnets, the force of the lower magnet on the upper magnet is equal to the net downward force:
Force of the lower magnet on the upper magnet = net downward force
= 28.04 N
Therefore, the magnitude of the force of the lower magnet on the upper magnet is 28.04 N.