A Tired Worker Pushes a Heavy (100-Kg)crate That Is Resting

question 47

Multiple Choice

A tired worker pushes a heavy (100-kg) crate that is resting on a thick pile carpet.The coefficients of static and kinetic friction are 0.6 and 0.4,respectively.The worker pushes with a force of 500 N.The frictional force exerted by the surface is

• A)1000 N
• B)600 N
• C)500 N
• D)400 N
• E)100 N

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Definitions:

Autonomic Nervous

Part of the peripheral nervous system that controls involuntary bodily functions, such as heartbeat, digestion, and respiratory rate, without conscious effort.

Somatic Nervous

Pertaining to the part of the peripheral nervous system that handles voluntary control of body movements via skeletal muscles.

Central Nervous

Central to the nervous system, comprising the brain and spinal cord, responsible for processing and sending out signals to the body.

Endocrine

Pertaining to glands that secrete hormones or to the hormones themselves, which are released into the bloodstream to affect distant organs.