An Auto Mechanic Is Attempting to Loosen a Bolt in an Engine

question 71

Multiple Choice

An auto mechanic is attempting to loosen a bolt in an engine using a large wrench, but to no avail. If she applies a force of 510 N perpendicular to the wrench she is using, applied at 0.75 m from the axis of rotation of the bolt, what is the value of the friction force applied to the outer surface of the bolt's threads? The threaded portion of the bolt has diameter 1.2 cm.

• A) 3.2 kN
• B) 16 N
• C) 32 kN
• D) 1.6 kN
• E) 64 kN

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Definitions:

Low Personal Control

A perception or belief that one has little influence or control over the events in their life, often associated with feelings of helplessness.

External Locus of Control

The belief that one's life outcomes are determined by external forces or events beyond their personal control.

Condom

A barrier device commonly used during sexual intercourse to reduce the risk of pregnancy and sexually transmitted infections (STIs).

Internal Locus of Control

The belief that individuals can control their own fate and the outcomes of their actions.