- #1
miraiw
- 17
- 0
This is just to see if I am totally confused or making sense.
A truck is pushing up a hill on a 30 degree incline. It has a mass of 45 tons. Find the force vector for the truck.
[tex]\vec{F}[/tex] = ||F|| cos[tex]\theta[/tex] i + ||F|| sin[tex]\theta[/tex] j
[tex]\vec{F}[/tex] = 45 cos30 i + 45 sin30 j
This is the answer that I assume was wanted, but I don't think that I can say what the force is given only the mass of the truck. After I asked my physics teacher (not the one who gave the quiz), he told me that this is the answer when moving at a constant velocity. If it was stated in the problem that the truck moved at a constant velocity is this correct?
Homework Statement
A truck is pushing up a hill on a 30 degree incline. It has a mass of 45 tons. Find the force vector for the truck.
Homework Equations
[tex]\vec{F}[/tex] = ||F|| cos[tex]\theta[/tex] i + ||F|| sin[tex]\theta[/tex] j
The Attempt at a Solution
[tex]\vec{F}[/tex] = 45 cos30 i + 45 sin30 j
This is the answer that I assume was wanted, but I don't think that I can say what the force is given only the mass of the truck. After I asked my physics teacher (not the one who gave the quiz), he told me that this is the answer when moving at a constant velocity. If it was stated in the problem that the truck moved at a constant velocity is this correct?