a student attaches a 0.5 kg object to a 0.7 m string and rotates the object around her head and parallel to the ground. how much

Question

2 years ago

8

tension force is required to make the object rotate with a speed of 12 m/s?

1 answer:

Marina CMI [18] · Answer 1 · 2022-05-15T13:07:04+03:00

3 0

The object would have a centripetal acceleration a of

a = (12 m/s)² / (0.7 m) ≈ 205.714 m/s²

so that the required tension in the string would be

T = (0.5 kg) a ≈ 102.857 N ≈ 100 N

(rounding to 1 significant digit)