Solve the problem.
-$\text { How much work is done by a } 120 - \mathrm { lb } \text { woman as she walks up } 8 \text { steps, each with a } \frac { 1 } { 2 } - \mathrm { ft } \text { rise? }$
A) 1920 ft · lb
B) 480 ft · lb
C) 960 ft · lb
D) 240 ft · lb

Question

Quizplus · Accepted Answer

The work done is calculated by the formula $W = Fd$, where $F$ is the force applied and $d$ is the distance moved in the direction of the force. Here, the force is the woman's weight (120 lb), and the distance is the total rise as she walks up the steps. With 8 steps and each having a $\frac{1}{2}$-ft rise, the total rise is $8 \times \frac{1}{2} = 4$ ft. Therefore, the work done is $120 \times 4 = 480$ ft·lb.

Solve the Problem A) 1920 Ft · Lb B) 480 Ft · Lb

Solve the Problem A) 1920 Ft · Lb
B) 480 Ft · Lb