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Answer :
Answer:
The balance has a normal force of 10 N.
Explanation:
We can draw the forces being acted on the beam balance through an FBD diagram. The masses 0.5 and 2 kg have a total gravitational force or [tex]F_G[/tex] of mg = (0.5 + 2)(10) = 25N. But the problem says that the balance only read 1.5 kg or in [tex]F_G[/tex], 15N (mg = 1.5 x 10).
So, there must be an opposing force acting on the balance, specifically a normal force, (from the balance's surface) that takes away some newtons from [tex]F_G[/tex].
We can set up an equation to find this force normal or [tex]F_N[/tex].
[tex]F_G-F_N=15N[/tex]
[tex]25N-F_N=15N[/tex]
[tex]25N-15N=F_N=10N[/tex]
Let me know if you have any questions!
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