Question

What is the tension in a cord 5 m long if a mass of 2 kg is attached to it and is being spun around in a circle at a speed of 5 m/s?

40 N
10 N
30 N
20 N

Answer 1

10 N

Step-by-step explanation:

∑F = ma

T = m v² / r

T = (2 kg) (5 m/s)² / (5 m)

T = 10 N