The Same Heavy Wooden Block Is Dragged by a Force

question 32

Multiple Choice

The same heavy wooden block is dragged by a force along a rough steel plate, as shown below for two possible situations. The magnitude of the acceleration is the same for the two situations; do not assume that the magnitude of is the same. The magnitude of the frictional force in (ii) , as compared with that in (i) is:

• A) the same
• B) greater
• C) less
• D) less for some angles and greater for others
• E) can be less or greater, depending on the magnitude of the applied force.

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Definitions:

Somatotropin

A growth hormone produced by the anterior pituitary gland that stimulates growth, cell reproduction, and cell regeneration in humans and other animals.

Antidiuretic Hormone

Antidiuretic Hormone is a hormone produced by the pituitary gland that regulates water balance in the body by controlling the amount of water reabsorbed by the kidneys.

Vasopressin

A hormone produced by the pituitary gland that regulates water balance in the body and increases blood pressure by constricting blood vessels.

Oxytocin

A hormone and neurotransmitter involved in childbirth and lactation, as well as in aspects of human behavior, such as sexual arousal, recognition, trust, anxiety, and mother-infant bonding.