Question

A rope applies a horizontal force of 290 N to pull a crate a distance of 3 m across the floor. A frictional like force of 80 N opposes this motion.A. What is the work done by the force applied by the rope?B. What is the work done by the frictional force?C. What is t’hé total work done on The. Crate?

Answer 1

Given

Applied force

F = 290 N

Friction

f = - 80N

Distance

d = 3 m

Explanation

Work can be calculated with the equation: Work = Force × Distance. The SI unit for work is the joule (J), or Newton • meter (N • m).

A.

$\begin{gathered} W=Fd \\ W=290N*3m \\ W=870\text{ J} \end{gathered}$

B.

$\begin{gathered} W=-80N*3m \\ W=-240\text{ J} \end{gathered}$

C.

$\begin{gathered} W=(290-80)N*3m \\ W=630\text{ J} \end{gathered}$