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2007-03-05 22:58:40 · 5 answers · asked by *nice gurl* 1 in Science & Mathematics Physics

5 answers

when one or more forces acting upo an object sometimes forces cancel each other such things behave as there is no force acting on it...

2007-03-07 06:42:06 · answer #1 · answered by Anonymous · 0 1

If you push on a crate weighing one ton with a force of 100 pounds on a rough floor likely nothing will happen. For every force there must be an equal and opposite reaction. Your force must overcome (exceed) the resisting force. If the object you are pushing on is constrained as for example a hand crank motion can only be in an unrestrained direction (rotation). If you squeeze a cube of iron between your hands (two forces) nothing will happen. Engineers draw a free body diagram showing the magnitude and direction of all forces (including gravity?) and use vector analysis to determine the resultant unbalanced force (if any) and the resulting acceleration if motion is possible.

2007-03-05 23:42:24 · answer #2 · answered by Kes 7 · 0 0

Have you met the parallelogram of forces, or triangle of forces?

The trick is to work out the magnitude and direction of a single force which would have the same effect on the object as the separate forces.

If the single force turns out to be zero, the forces are said to be balanced.

2007-03-05 23:19:43 · answer #3 · answered by lunchtime_browser 7 · 0 0

you add the forces as vectors, and if the sum is not a zero vector, the existence of net force implies that there is some acceleration in the direction defined by the direction of a net force, if the sum is zero, nothing happens

2007-03-05 23:09:58 · answer #4 · answered by Anonymous · 0 0

If the stress performing upon an merchandise is extra advantageous, then the acceleration is likewise extra advantageous. provided that we anticipate that the mass is persevering with and F=ma or stress = mass x acceleration, then as a results of fact the stress gets larger, the acceleration is likewise larger...desire this helps

2016-10-02 11:28:16 · answer #5 · answered by ? 4 · 0 0

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