A vehicle is travelling along concave road then along convex road of same radius of curvatures
at uniform speed. If the normal reactions on the vehicle as it crosses the lowest point of
concave surface, highest point of convex surface are
1.5 x10^N, 3 x10°N respectively, then the mass of vehicle is (g = 10m/s-2)
400 kg
O 450 kg
800 kg
O 900 kg
Answers
Answer:
In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors.
Electric potential energy, or Electrostatic potential energy, is a potential energy (measured in joules) that results from conservative Coulomb forces and is associated with the configuration of a particular set of point charges within a defined system. An object may have electric potential energy by virtue of two key elements: its own electric charge and its relative position to other electrically charged objects.
The term "electric potential energy" is used to describe the potential energy in systems with time-variant electric fields, while the term "electrostatic potential energy" is used to describe the potential energy in systems with time-invariant electric fields.
The SI unit of electric potential energy is joule (named after the English physicist James Prescott Joule). In the CGS system the erg is the unit of energy, being equal to 10−7 J. Also electronvolts may be used, 1 eV = 1.602×10−19 J.
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Answer:
Speed is uniform:
At point B: N
1
−mg=
R
mv
2
−−−−(1)
At point D: mg−N
2
=
R
mv
2
−−−−−(2)
(1)−(2)
N
1
+N
2
=2mg
(1.5+.3)×10
4
=2mg
m=900kg
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