Yo-yos display both linear momentum (moving up and down on the string) and angular momentum (spinning around). The angular momentum is what makes yo-yos the perfect tool for doing different tricks. A spinning object always tries to maintain its angular momentum, regardless of any forces trying to hold it back.
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What are the forces acting on a yoyo?
When the yo-yo is released, there are two forces acting on it- tension along the string in the upward direction, and gravity in the downward direction. All forces are along the vertical, and the net force gives us gravity minus tension if down is the positive direction i.e. mgโT=ma.
What is the energy transfer in a yoyo?
When the yo-yo is held above the ground, the yo-yo has potential energy from the gravity that is already pulling it down. As the yo-yo falls, that potential energy changes to kinetic energy, which increases as the yo-yo falls down. As the toy climbs back up, the kinetic energy changes back to potential energy.
When a rolling yo-yo falls to the bottom of its cord what is its rotation as it climbs back up the cord?
As the yo-yo continues to climb back up the string, the angular momentum (or kinetic energy of rotation) of the yo-yo is converted back into gravitational potential corresponding to the increasing height of the center of mass of the yo-yo.
How would you explain the total mechanical energy of a yoyo?
Is a yoyo before it is released kinetic or potential energy?
Potential and kinetic energy When you hold a yo-yo in your hand, it has potential energy: it stores energy because it’s high above the floor. When you release it, the potential energy is gradually converted into kinetic energy (the energy something has because it’s moving).
How do you make a yoyo spin?
What is the moment of inertia of this yo-yo?
Since a yo-yo is approximately a solid cylinder spinning about an axis through its center we can use the following formula to find its moment of inertia: I = 1 2 MR2 where M is the mass and R is the radius of the cylinder. The more mass away from the axis of rotation, the greater the yoyo’s moment of inertia.
How do you find the acceleration of a yoyo?
What form is the energy output in when a toy yoyo stops?
What form is the energy in when it stops? (Heat energy. Ultimately, friction between the moving parts turns the kinetic energy into heat.)
What is the increase in the rotational kinetic energy of the yo-yo?
The increase in the rotational energy of the kinetic energy of the yo-yo is, 0.207 J 0.207 textJ 0.207 J.
What are the parts of a yo-yo and how do they work together?
A yo-yo is a toy that has two disks connected together and sandwiching a long string. Traditionally made of wood, the disks are now commonly made of plastic. Attached to the center of the disks, the string winds, unwinds, and rewinds, while attached to a person’s finger.
What causes rolling without slipping?
For many dynamics problems, rolling without slipping means there is a friction force acting on the wheel at the contact point P. This friction force prevents slipping. In this instance the friction is known as static friction since there is no relative sliding between the wheel and surface at the contact point P.
What is slipping in rotational motion?
If the object’s center of rotation moves faster than vr, the rotation can’t ‘keep up’, and the object slides over the surface. We call this type of motion slipping. Due to friction, objects undergoing slipping motion typically quickly slow down to vr, at which point they roll without slipping.
What does rolling without slipping mean?
Rolling without slipping is a combination of translation and rotation where the point of contact is instantaneously at rest. When an object experiences pure translational motion , all of its points move with the same velocity as the center of mass; that is in the same direction and with the same speed.
What happens to mechanical energy if the potential energy of an object decreases?
The sum of an object’s potential and kinetic energies is called the object’s mechanical energy. As an object falls its potential energy decreases, while its kinetic energy increases. The decrease in potential energy is exactly equal to the increase in kinetic energy. Another important concept is work.
How will you state the law of conservation of mechanical energy?
This is known as the conservation of mechanical energy. The principle of conservation of mechanical energy: If only conservative forces are doing work, the total mechanical energy of a system neither increases nor decreases in any process. It stays constantโit is conserved.
Which form of energy does a moving object possess?
Kinetic energy is the energy an object has because of its motion.
How does potential energy transform to kinetic energy?
A: An object has potential energy (stored energy) when it is not in motion. Once a force has been applied or it begins to move the potential energy changes to kinetic energy (energy of motion).
Can an object have both kinetic energy and potential energy at the same time?
An object can have both kinetic and potential energy at the same time. For example, an object which is falling, but has not yet reached the ground has kinetic energy because it is moving downwards, and potential energy because it is able to move downwards even further than it already has.
What is the difference between kinetic and potential energy?
Potential energy is the stored energy in any object or system by virtue of its position or arrangement of parts. However, it isn’t affected by the environment outside of the object or system, such as air or height. On the other hand, kinetic energy is the energy of an object or a system’s particles in motion.
How fast can a yoyo spin?
Why does my yoyo spin sideways?
How long does a responsive yoyo spin?
Responsive ball bearing yoyos have a sleep threshold of 5-45 seconds. Again, if you drop your yoyo and it sleeps for at least 5 seconds, most likely there is no problem with your yoyo.
How do you use moment of inertia?
