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A magician pulls a tablecloth from under a 200g mug located 30cm from the edge of the earth The cloth exerts a friction force of 0.10N on the mug and the cloth is pulled with a constant acceleration?
Since the mug is stationary on the tablecloth, the friction force must exactly balance the force pulling it forward. Using Newton's second law, we can relate the applied force to the mass and acceleration of the mug. The mug and tablecloth will move together if the force applied is greater than the force of static friction between them.
Why is it possible for the objects on a table to remain on the table when the table cloth was pulled away quicly?
Newton's first law of motion states that a body will maintain its current state of rest or uniform motion unless acted upon by an external force. Therefore, the magnitude of the force generated by the tablecloth on the dishes and the duration of the force determines whether the dishes fall off with the table cloth. The force that the tablecloth generates on the dishes when it starts to move is the frictional force. Therefore, the lower the coefficient of static friction of the tablecloth (e.g. plastic has a lower coefficient of friction than Velcro), the lower the magnitude of the force generated (i.e. pulling out a Teflon table cloth is much easier than pulling out a thick wool tablecloth). Also, the shorter the duration of the force (i.e. pulling the tablecloth off quickly), the lower the cumulative velocity resulting from the momentary acceleration (v = a*t, even if acceleration is large, a short time will reduce final velocity significantly). Therefore, lower coefficient of friction results in the reduction of force, the reduction of force leads to reduced acceleration (F = m*a), and reduced acceleration coupled with a short time period gives a lower final velocity.Hence it is possilble to pull a tablecloth off a table without disturbing the dishes on it.
What is the explanation behind the magician's tablecloth trick and how does it relate to inertia?
When a magician sharply yanks a tablecloth from under any number of precarious objects selected for dramatic effect, he takes advantage of the inertia of the objects on the tablecloth. According to Sir Isaac Newton's classical laws of motion, an object at rest will remain at rest unless acted upon by an outside force; ie, even at rest, an object has inertia and will resist acceleration. As the tablecloth is pulled, the friction caused by the weight of items on it accelerates them. But this takes time; as long as the friction is low and the acceleration brief, the tablecloth can be pulled away before items on the table are moved very far. But, try this with a less slippery tablecloth (more friction) or by pulling slowly (longer acceleration) and disaster results. Basically, as long as there is more inertia (read mass) than friction, this can be done.
What is a force that is pulled in opposite directions called?
A force that is pulled in opposite directions is called tension. Tension is the force experienced by an object when it is pulled on both ends in opposite directions, creating stress within the object.
What name is given to the stretching force that occurs in a spring or rope being pulled?
The name given to the stretching force that occurs in a spring or rope being pulled is tension. It is a pulling force exerted by the material when it is stretched or pulled.
What is happening when you has jumped out from the aircraft but you not yet open your parachute?
you will be pulled towards the earth by the force of gravity
A magician pulls a tablecloth from under a 200g mug located 30cm from the edge of the earth The cloth exerts a friction force of 0.10N on the mug and the cloth is pulled with a constant acceleration?
Since the mug is stationary on the tablecloth, the friction force must exactly balance the force pulling it forward. Using Newton's second law, we can relate the applied force to the mass and acceleration of the mug. The mug and tablecloth will move together if the force applied is greater than the force of static friction between them.
Why is it possible for the objects on a table to remain on the table when the table cloth was pulled away quicly?
Newton's first law of motion states that a body will maintain its current state of rest or uniform motion unless acted upon by an external force. Therefore, the magnitude of the force generated by the tablecloth on the dishes and the duration of the force determines whether the dishes fall off with the table cloth. The force that the tablecloth generates on the dishes when it starts to move is the frictional force. Therefore, the lower the coefficient of static friction of the tablecloth (e.g. plastic has a lower coefficient of friction than Velcro), the lower the magnitude of the force generated (i.e. pulling out a Teflon table cloth is much easier than pulling out a thick wool tablecloth). Also, the shorter the duration of the force (i.e. pulling the tablecloth off quickly), the lower the cumulative velocity resulting from the momentary acceleration (v = a*t, even if acceleration is large, a short time will reduce final velocity significantly). Therefore, lower coefficient of friction results in the reduction of force, the reduction of force leads to reduced acceleration (F = m*a), and reduced acceleration coupled with a short time period gives a lower final velocity.Hence it is possilble to pull a tablecloth off a table without disturbing the dishes on it.
What is the explanation behind the magician's tablecloth trick and how does it relate to inertia?
When a magician sharply yanks a tablecloth from under any number of precarious objects selected for dramatic effect, he takes advantage of the inertia of the objects on the tablecloth. According to Sir Isaac Newton's classical laws of motion, an object at rest will remain at rest unless acted upon by an outside force; ie, even at rest, an object has inertia and will resist acceleration. As the tablecloth is pulled, the friction caused by the weight of items on it accelerates them. But this takes time; as long as the friction is low and the acceleration brief, the tablecloth can be pulled away before items on the table are moved very far. But, try this with a less slippery tablecloth (more friction) or by pulling slowly (longer acceleration) and disaster results. Basically, as long as there is more inertia (read mass) than friction, this can be done.
What is a force that is pulled in opposite directions called?
A force that is pulled in opposite directions is called tension. Tension is the force experienced by an object when it is pulled on both ends in opposite directions, creating stress within the object.
What name is given to the stretching force that occurs in a spring or rope being pulled?
The name given to the stretching force that occurs in a spring or rope being pulled is tension. It is a pulling force exerted by the material when it is stretched or pulled.
What is the net force on a cylinder that is being pulled to the right with a force of 42 N and pulled to the left with a force of 40 N?
In this case you can simply subtract the two forces.
What force pulled a skydiver to the ground?
gravity
Is lift a force?
No, its pulled up on a cable
Name the force that occurs in a rope when both ends are pulled in opposite directions?
Tension is the force that occurs in a rope when both ends are pulled in opposite directions. This force acts to stretch and elongate the rope.
What is the amount of force with which an object is pulled down to earth?
The amount of force with which an object is pulled down to Earth is known as the force of gravity. On Earth, this force is approximately 9.81 meters per second squared (m/s^2).
Is everything pushed or are objects also pulled?
Objects can be both pushed and pulled. When an object moves in a direction away from the force applied, it is considered to have been pushed. Conversely, when an object moves in the direction of the force applied, it is considered to have been pulled.
