Answer:
The angular momentum is
So, we need to find the moment of inertia of the barbell.
The barbell consist of three parts, two masses of 25 kg and a rod of 15 kg.
The moment of inertia of the barbell can be found by summing the moment of inertia of the rod and two masses.
We need to convert 10 rpm to rad/s.
The angular momentum can now be calculated.
This question involves the concepts of momentum, speed, and mass.
The momentum of the car is "24960 N.s".
<h3>MOMENTUM</h3>
Momentum is defined as the quantity of motion contained in a body. Mathematically, it is defined as the product of the mass and speed of the object:
P = mv
where,
- P = momentum = ?
- m = mass = 1600 kg
- v = speed = 15.6 m/s
Therefore,
P = (1600 kg)(15.6 m/s)
P = 24960 N.s
Learn more about momentum here:
brainly.com/question/904448
Answer:
the net force is acting upon the object. The net force is the vector sum of all the forces that act upon an object. That is to say, the net force is the sum of all the forces, taking into account the fact that a force is a vector and two forces of equal magnitude. Hope this helps you.
Answer:
The body's rotational inertia is greater in layout position than in tucked position. Because the body remains airborne for roughly the same time interval in either position, the gymnast must have much greater kinetic energy in layout position to complete the backflip.
Explanation:
A gymnast's backflip is considered more difficult to do in the layout (straight body) position than in the tucked position.
When the body is straight , its moment of rotational inertia is more than the case when he folds his body round. Hence rotational inertia ( moment of inertia x angular velocity ) is also greater. To achieve that inertia , there is need of greater imput of energy in the form of kinetic energy which requires greater effort.
So a gymnast's backflip is considered more difficult to do in the layout (straight body) position than in the tucked position.