PHY$203$ Practice Exam #$3$

NAME:

Acceleration due to Gravity $($on Earth$)$: $g=10\frac{m}{s^2}$

In terms of the base units $m,kg,$ and s $,$ write the correct SI units for the following quantities:

a$)$ Force

b$)$ Work

c$)$ Kinetic energy

d$)$ Coefficient of static friction

Your friend rides a Ferris wheel rotating with a constant speed. Identify whether each of the following quantities for your friend stays the same or differs between points A and C $.$

a$)$ Net force

b$)$ Normal force

c$)$ Weight force

d$)$ Acceleration

An object is acted upon by two forces, with magnitudes $|vec(F{)}_1|=|vec(F{)}_2|=5\mathrm{.}0N,$ as it moves a distance $d=2\mathrm{.}0m$ to the right, as shown $($additional forces may not be present in the diagram$).$ Calculate the net work done on the object by the two forces.

You are standing on a scale inside of an elevator traveling upward at a constant speed. Draw a free$-$body diagram for the scale and identify whether it will show a number greater than, less than, or equal to your normal weight.