Asked by S
a box of mass 7 kg is pulled up a frictionless 30 degree incline by a force of 381 N which acts parallel to the incline surface. the box has an initial speed of 5m/s and is pulled 9m. what is the speed of the box at the end of the 9m.
Answers
Answered by
Chanz
Initial KE + Work added = final KE + GPE
1/2(7)5^2 + 381*9 = 1/2(7)vf^2 + 7(9.8)h
Find h using trig for a triangle with 30o angle and 9 m hypotenuse.
1/2(7)5^2 + 381*9 = 1/2(7)vf^2 + 7(9.8)h
Find h using trig for a triangle with 30o angle and 9 m hypotenuse.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.