Earning goal: to be able to calculate work done by a constant force directed at different angles relative to displacement
if an object undergoes displacement while being acted upon by a force (or several forces), it is said that work is being done on the object. if the object is moving in a straight line and the displacement and the force are known, the work done by the force can be calculated as
w= f*s=/f/ /s/ cosθ
,
where w is the work done by force f on the object that undergoes displacement s directed at angle θ relative to f .
note that depending on the value of cosθ, the work done can be positive, negative, or zero.
in this problem, you will practice calculating work done on an object moving in a straight line. the first series of questions is related to the accompanying figure. (intro 1 figure)
uploaded imageuploaded image
question= find the work w done by the 30-newton force.
use two significant figures in your answer. express your answer in joules.
Answers: 1
Physics, 22.06.2019 04:30
True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.
Answers: 2
Physics, 22.06.2019 18:00
Wind and moving water provide energy. question 1 options: chemical mechanical thermal none of the above
Answers: 1
Physics, 22.06.2019 18:20
Awave with a frequency of 500 hz is traveling at a speed of 100 m/s.what is the wavelength?
Answers: 1
Earning goal: to be able to calculate work done by a constant force directed at different angles re...
Health, 10.11.2020 18:30
Chemistry, 10.11.2020 18:30
Arts, 10.11.2020 18:30
English, 10.11.2020 18:30
Mathematics, 10.11.2020 18:30
History, 10.11.2020 18:30
Geography, 10.11.2020 18:30
Mathematics, 10.11.2020 18:30
Mathematics, 10.11.2020 18:30