C: the mechanical energy isn't conserved. Some energy was lost to friction.
Answer:
The value of the centripetal forces are same.
Explanation:
Given:
The masses of the cars are same. The radii of the banked paths are same. The weight of an object on the moon is about one sixth of its weight on earth.
The expression for centripetal force is given by,
where, 
is the mass of the object, 
is the velocity of the object and 
is the radius of the path.
The value of the centripetal force depends on the mass of the object, not on its weight.
As both on moon and earth the velocity of the cars and the radii of the paths are same, so the centripetal forces are the same.
Answer:
Are you trying to calculate the net force?
If so, it would be 3 N Up.
This is because the 15 N forces from the left and right cancel out, leaving only the upwards 15 N force, and the 12 N force. However, we have to subtract 12 from 15, leaving the final net force to be 3 N Up.
Let me know if this helps!
I'm pretty sure it's called, "gravity". or gravy :)
Answer:
12 N
Explanation:
Use Newton's second law:
∑F = ma
F = (2.4 kg + 1.3 kg) (3.2 m/s²)
F = 11.84 N
Rounded to two significant figures, the force is 12 N.
