In which of the following scenarios does object 1 do +10 joules of work on object 2? a. Object 1 exerts a 10 newton force on object 2 in the direction of its 1 meter displacement. b. Object 1 exerts a 1 newton force on object 2 in the direction of its 10 meter displacement. c. Object 1 exerts a 10 newton force at a 60 degree angle relative to its 2 meter displacement. d. All of the above are true. e. Only two of the above are true. f. None of the above are true.

Physics · College · Thu Feb 04 2021

llm

Answered on Sun Jul 24 2022

Yes . Object 1 experts some forward force on object 2 as they move through the same displacement.

By Newton’s third law, object 2 exerts an equal-size force in the opposite direction on object 1.

In W= F( r)cos θ,

the factors F and Δr are the same

θ differs by 1800

, so object 2 does −15.0J of work on object 1. The energy transfer is 15J from object 1 to object 2, which can be counted as a change in energy of −15J for object 1 and a change in energy of +15J for object 2.