Answer:The tangential acceleration is 0 m/s².
Explanation:Given:
Radius of the wheel = 0.5 m
The point of observation for calculating tangential acceleration = 0.2 m from center.
Tangential speed at the point of observation = 2 m/s
The angular speed of the wheel is a constant.
In order to determine the tangential acceleration, we make use of the following formula:
Tangential acceleration at a point = Angular acceleration × Distance of the point from center
Or, a_t=\alpha \times r
Now, angular acceleration is defined as the rate of change of angular speed.
Here, the angular speed of the wheel is a constant. So, the change of angular speed is 0. Therefore, the angular acceleration is also 0 rad/s².
Now, from the above formula, as angular acceleration is 0, the magnitude of tangential acceleration at a point that is 0.2 m from the center of the wheel is also 0 m/s².
Hope it helped
density of a piece of wood that weighs 62 grams and displaces 0.525 l of water is 12g/ml.
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What is density?</h3>
density is the mass of a material substance per unit volume. d = M/V, where d is density, M is mass, and V is volume, is the formula for density. Grams per cubic centimeter are a typical unit of measurement for density. For instance, whereas Earth has a density of 5.51 grams per cubic centimeter, water has a density of 1 grams per cubic centimeter. Another way to state density is in kilograms per cubic meter (in metre-kilogram-second or SI units). For instance, air weighs 1.2 pounds per cubic metre. In textbooks and manuals, the densities of typical solids, liquids, and gases are stated.
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Answer:
Tangential acceleration,
Explanation:
Given that,
Radius of the circle, r = 0.3 m
Initial speed of the ball, u = 0
After 0.65 sec, the angular speed of the ball is 9.7 rad/s,
Let is the angular acceleration of the ball. It is given by the change in velocity per unit time as :
Here, (at rest)
The tangential acceleration is given by in terms of angular acceleration as :
So, the tangential acceleration of the ball is . Hence, this is the required solution.
In this case, the air from the warm area will always start moving towards the colder areas because as the temperature in both lands should be equal. This is one of the laws of thermodynamics.