Question

Carlos uses a rope to pull his car 30 m to a parking lot because it ran out of gas. If Carlos exerts 2,000 N of force to pull the rope, and the rope is at an angle of 15° to the road, how much work did he do? Round your answer to two significant figures. 1.6 × 104 J 3.5 × 104 J 5.8 × 104 J 9.0 × 104 J

Answer 1

5.8 × 10^4 J

Step-by-step explanation:

Answer 2

Note that

`W = Fd \cos \theta`

Thus, here,

W = (2000 N)(30 m)(cos 15) = 57955.54958 J

Here, we only have 2 significant figures. Hence, in 2 significant figures,

`W = 5.8*10^4 \; J`.