Contact force is present only during the “contact”. It does not remain in/on the body when the “contact” is over. Example: When you press your hand against your desk, you feel the repulsion of the electrons in the atoms of your hand against the electrons in the atoms of the desk....
Does an unbalanced force need to act upon an object, for the object to move, even though there are equal and opposite forces acting upon the object? What is the difference between balanced and unbalanced forces? Three forces are exerted on an object placed on a...
A joule is equal to one what times one meter? What is velocity measured in? What do each of the fundamental forces do? How do the units of work and power compare? Is momentum measured in Newtons? What does g-force mean? How do you calculate the net force of an object?
The force exerted by a ramp on a mass is also known as the "normal force" and is equal to the weight of the object multiplied by the sine of the angle of the ramp. How does the angle of the ramp affect the force exerted?
In the late 1600s, Sir Isaac Newton published "Principia Mathematica," a book that connected the worlds of math and physics. Among other important ideas, he described the second law of motion – that force is equal to mass times acceleration or f = ma. Although it looks simple at first ...
When you deal with massive bodies like the Earth, however, which has a mass of 6 x 1024 kilograms (see How much does planet Earth weigh?), it adds up to a rather powerful gravitational force. That's why you're not floating around in space right now. The force of gravity acting on ...
Newton's third lawstates that "for every action, there is an equal and opposite reaction." Just as gravity causes you to exert a force on the ground, the ground appears to exert an equal and opposite force on your feet. When you are in an accelerating car, the seat exerts a forward ...
in physics force work power and energy current electricity laws of physics ohm's law newton's laws of motion archimedes principle doppler effect kirchhoff's law law of reflection ampere's law faraday's law bernoulli's principle lenz's law si unit list unit of pressure viscosity unit unit of...
Does the strong force change? If for every force there is an equal and opposite reaction force, how is it possible for an object to accelerate? A 7.0 kg object undergoes an acceleration of 2.1 m/s^2. a) What is the magnitude of the resultant force acting on it? b) If this ...
rest or in linear motion stays at rest or in linear motion unless acted upon by an external force. His second law defines force (F) as equal to mass (m) times acceleration (a),F=ma. Finally, the third law states that for every force there is an equal but opposite reaction force. ...