For an object at equilibrium :
.option D: It might be stationary.
.option E: Fnetx must be zero, Fnetx can be anything.
What is equilibrium?
This refers to a state in which an object is at rest or balanced to the equal action of opposing forces.
At equilibrium, in the presence of external forces, the opposite forces normally have a balanced effect on the object in concern. Objects at equilibrium are known for their stable nature in terms of motion and energy.
Conditions for equilibrium
.The object must have no acceleration.
.The total force acting on the body i.e the net force and the net torque on the object must be zero.
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The approximate height of the tsunami in Alaska in 1958 is 1720ft
Answer:
turntable with a moment of inertia of 7.2 × − ⋅ rotates freely with an angular speed of 6.5 ⁄ . Riding on the rim of the turntable, 2 from the center, is a hamster. When the hamster walks to the center of the turntable, the angular speed of the turntable becomes ⁄. What is the mass of hamster?
Explanation:
Answer:
Explanation:
It is given that,
Mass of each mass, m = 2 kg
Side of the square frame, l = 0.68 m
It is clearly written in the question that the four point masses positioned at the corners of an essentially massless rigid frame if the frame rotates around one side like a door rotates on its hinges. Let ABCD are the vertices of square and AB acts like a door.
The moment of inertia for a set of point masses is given by :
So,
The sum of inertia at A and B is 0 because l = 0
So,the moment of inertia for a frame of four point masses positioned at the corners is . Hence, this is the required solution.
Answer:
vaporize
Explanation:
Heat of vaporization of a substance is the heat required to transform 1 kg of substance to vapor as the name suggests. Heat of vaporization is related to pressure. Normally a liquid will start to vaporize when the vapor pressure of the surrounding liquid and the liquid being heated become equal.
The heat of vaporization of water is 40660 J/mol.