An Object Attached to the End of a String Swings $\theta$

question 19

Multiple Choice

An object attached to the end of a string swings in a vertical circle (R = 1.2 m) ,as shown.At an instant when $\theta$ = 30 $\degree$ ,the speed of the object is 5.1 m/s and the tension in the string has a magnitude of 20 N.What is the mass of the object?

• A)2.0 kg
• B)1.5 kg
• C)1.8 kg
• D)1.2 kg
• E)0.80 kg

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Definitions:

Maintenance Rehearsal

A cognitive strategy that involves repetitively reviewing information to retain it in short-term memory.

Repeating

The act of saying, writing, or doing something again, often for emphasis or to ensure understanding.

Short-term Memories

Refers to the part of the memory system that holds information for a brief period, typically seconds to minutes.

Prefrontal Lobes

The front part of the frontal lobes of the brain, implicated in a variety of complex behaviors, including planning, and greatly contributes to personality development.