- #1

john merrick

- 7

- 2

- Homework Statement:
- If it takes a force of 3943 N [parallel to the track] to pull the roller coaster up to point A, and it is pulled along 105 m of track, find the work done on the roller coaster.

- Relevant Equations:
- E=1/2mv^2

height to point A is 65m. no friction. comes to rest at point A. total mass of the roller coaster is 650 kg.

the work-energy theorem states that the net work done on an object is equal to the change in kinetic energy of the object. kinetic energy is E=1/2mv^2. initial velocity is zero(problem doesn't say that but i think it is safe to assume). final velocity is zero. therefore the net work on the roller coaster is zero. is this correct?

the work-energy theorem states that the net work done on an object is equal to the change in kinetic energy of the object. kinetic energy is E=1/2mv^2. initial velocity is zero(problem doesn't say that but i think it is safe to assume). final velocity is zero. therefore the net work on the roller coaster is zero. is this correct?

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