Physics Laboratory Experiments

Jerry D. Wilson, Cecilia A. Hernandez-Hall

Chapter 12 (GL) Work and Energy - all with Video Answers

Educators

Chapter Questions

Problem 1

What was the work done by the suspended weight when the car (a) moved up the incline and (b) moved down the incline? (Show your calculations.)]
$$
\begin{array}{|r|r|r|}
\hline & \theta=30^{\circ} & \theta=45^{\circ} \\
\hline \text { Car moving up incline } & & \\
\hline \text { Car moving down incline } & & \\
\hline
\end{array}
$$

Aja S

Numerade Educator

05:09

Problem 2

What was the work done by gravity acting on the car when it (a) moved up the incline and (b) moved down the incline? (Show your calculations.)
$$
\begin{array}{|r|r|r|}
\hline & \theta=30^{\circ} & \theta=45^{\circ} \\
\hline \text { Car moving up incline } & & \\
\hline \text { Car moving down incline } & & \\
\hline
\end{array}
$$

Shelby Mohamed

Numerade Educator

05:48

Problem 3

(a) For the car going up the incline, what percentage of the work done by the suspended weight was lost to friction? (b) For the car moving down the incline, what percentage of the work done by gravity was lost to friction? (Show your calculations.)
$$
\begin{array}{|r|r|r|}
\hline & \theta=30^{\circ} & \theta=45^{\circ} \\
\hline \text { Car moving up incline } & & \\
\hline \text { Car moving down incline } & & \\
\hline
\end{array}
$$

Christopher Dzorkpata

Numerade Educator