A 50-N Crate Is Pulled Up a 5-M Inclined Plane $\degree$

question 14

Multiple Choice

A 50-N crate is pulled up a 5-m inclined plane by a worker at constant velocity.If the plane is inclined at an angle of 37 $\degree$ to the horizontal and there exists a constant frictional force of 10 N between the crate and the surface,what is the force applied by the worker?

• A)zero
• B)20 N
• C)30 N
• D)40 N

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Definitions:

Fetuses

The term used to describe a developing human from roughly eight weeks after conception until birth.

Embryos

An embryo refers to the early stages of development in many organisms, following fertilization and during which vital organs and structures begin to form.

Braxton-Hicks Contractions

False labor pains that are a tightening of the uterine muscles for one to two minutes and are usually painless.

Cervix Effaced

Cervix effacement is the process in pregnancy wherein the cervix becomes thinner and shorter in preparation for childbirth.