. Suppose that the displacement of an object is related to time according to the expression: x(t) = B t3 . Using dimensional ana
1 answer:
Answer:
The dimensionality of B is <em>length</em> per cubic <em>time</em>.
Explanation:
Units for displacement and time are <em>length</em> and <em>time</em>
, respectively. Then, formula can be tested for dimensional analysis as follows:
Now, let is clear to determine its units:
The dimensionality of B is <em>length</em> per cubic <em>time</em>.
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By looking at the acceleration of the object.
In fact, Netwon's second law states that the resultant of the forces acting on an object is equal to the product between the mass m of the object and its acceleration:
So, when static friction is acting on the object, if the object is still not moving we know that all the forces are balanced: in fact, since the object is stationary, its acceleration is zero, and so the resultant of the forces (left term in the formula) must be zero as well (i.e. the forces are balanced).
In fact, Netwon's second law states that the resultant of the forces acting on an object is equal to the product between the mass m of the object and its acceleration:
So, when static friction is acting on the object, if the object is still not moving we know that all the forces are balanced: in fact, since the object is stationary, its acceleration is zero, and so the resultant of the forces (left term in the formula) must be zero as well (i.e. the forces are balanced).
Answer:
.2166 repeating or 21.66% repeating
Explanation:
In attached image
