Answer:
17.71 kgm²s⁻¹
Explanation:
<em>Angular momentum </em>is the rotational momentum , which is quite similar to linear momentum.main difference is that here we consider a rotational motion.
*The total angular momentum of a closed system remains constant.
by definition ,
angular momentum = moment of inertia (I) × angular velocity (ω)
where
<em>ω = 2π × frequency (f)</em> = 2π × 6
<em>angular momentum = 0.47 × 12π = 17.71 kgm²s⁻¹</em>
Answer:
in the picture
Explanation:
in the picture, and im not 100% suree..but i really hope i helped...
<SP0TL16HT>
Electric power lines in the electric posts hang very low during the summer to prevent overheating. They’re often overloaded with high energy consumption and overheating could cause destruction of conductors. The high temperature could melt or expand the copper and aluminum materials. To protect public safety and guarantee an efficient energy transmission, the power lines are lowered to decrease temperature.
Answer:
The essential characteristics of an object in equilibrium is acceleration of the object must be zero.
Explanation:
Equilibrium: An object acted upon by several forces is said to be in equilibrium if it does no it moves or rotate. Equilibrium can be defined as the state of stability of an object.
Condition for equilibrium
(i) The resultant force acting on the object must me equal to zero.
(ii) The sum of moment acting on the object must be equal to zero.
But.
F = ma..................... Equation 1
Where F = net force , m = mass, a = acceleration.
from the equation above,
For F = 0 N, a must be equal to zero.
<em>From the above, the essential characteristics of an object in equilibrium is acceleration must be zero</em>
If we didn’t have it, we might just float into space. Or it would be hard to live with everything floating around