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.

Explanation:

The work done by Carlos is given by:

where

F is the force exerted by Carlos

d is the distance through which the car has been pulled

is the angle between the direction of the force and the motion of the car

In this problem, . By substituting these numbers into the formula, we find

unlike poles attract

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.