Question

1. you place a mass of 250 grams on the measurement tray of a triple beam balance and then set the rider on the 500 gram beam to the 200 gram mark (the other riders are set to 0 grams). which of the following statements is true?

o the pointer will be above the zero mark.
o the pointer will be below the zero mark.
o the pointer will be lined up with the zero mark.
o the pointer will move up and down once per second.

Explanation:

Step1: Analyze the mass and rider position

The mass on the tray is 250 grams and the rider is set to 200 grams (since it's on the 500 - gram beam at the 200 - gram mark and others are 0). The total weight is \(250+200 = 450\) grams. Since the total weight is positive, the pointer will be below the zero mark.

Answer:

The pointer will be below the zero mark.