Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Laws of Motion

Question:

A mass m is attached to a thin wire and whirled in a vertical circle. The wire is most likely to break when:

Options:

inclined at an angle of 60° from vertical

the mass is at the highest point

the wire is horizontal

the mass is at the lowest point

Correct Answer:

the mass is at the lowest point

Explanation:

the wire is most likely to break where the tension is the most.

T - mg = \(\frac{mu^2}{L}\)

T = mg + \(\frac{mu^2}{L}\)

Tension and mg are in opposite directions at the lowest point.