Are blocks supported? How will it move?

1.The object accelerates its slide.

2.It's all smooth, of course there is no friction, but there is support. Because the inclined machine also has to move, the force ** is on the object (to the right), so the object is subjected to the friction force to the left (up).

It can be judged from the definition of work, the inclined plane is smooth, the force of the inclined plane on the block is elastic force, so it is perpendicular to the inclined plane, in the process of the block sliding, the inclined plane moves horizontally to the right at the same time, and the displacement of the block to the ground is the sum of the relative inclined plane displacement of the block and the horizontal displacement of the inclined plane, which is negative work.

Because it is a smooth surface, there is no friction between objects.

I'm only level 1, so I can't send out the picture, understand it yourself, I believe you can!

Blocks are only supported by gravity.

The block will slide down the slope while the block moves to the right, and the block does not experience the friction that the block gives him, as it is smooth.

Since it is smooth, the object is only subject to gravity and the reaction force with the plane.

Absolutely frictionless!

Physics should fall vertically??? The inclined plane should be horizontal to the right... I didn't study physics for years...

The bevel block is smooth, so there is no friction. However, when the vertical gravity of the block is combined with the support of the vertical oblique block, the force that generates acceleration is formed, so the block accelerates along the inclined plane.

It should be moving downward along the inclined plane and facing left relatively flat. Not subject to friction because it is smooth.

Blocks are driven by gravity and move downward along the inclined block; The bevel is smooth and therefore not subject to friction; The block is pressed on the inclined plane, so the inclined block is subjected to the downward pressure perpendicular to the inclined plane, and this pressure is decomposed horizontally and vertically, and the horizontal component makes the inclined block move horizontally; (ENDS).

Force is not what sustains the motion of an object, whereas a bridge of remorse is what changes the motion of an object.

The force will change the state of motion of the object, that is, the magnitude and direction of the object's motion speed will change, and more professionally, the force will cause the object to accelerate before birth. At a certain force, the magnitude of the acceleration is inversely proportional to the mass of the object. That is, for the same thrust, the greater the mass, the less acceleration it can produce.

The nature of force: 1. Materiality: force is the effect of an object (matter, mass) on an object (matter, mass), an object is affected by a force, there must be another object to exert this effect on it, and the force cannot be separated from the object and exist independently.

2. Reciprocity (interaction force): The violent action between any two objects is always mutual, and the force object must also be the force object. As long as one object exerts a force on another object, the stressed object in turn will certainly add a force to the object to which the force is applied.

3. Vector: Force is a vector, which has both magnitude and direction. Simultaneity: The force is generated at the same time and disappears at the same time.

4. Independence: The action of one force does not affect the action of another force.

Force is not what sustains the motion of an object. Force is the cause of changing the motion of an object, i.e., it can change the velocity, direction, or shape of an object. According to Newton's first law, an object will always remain at rest or in a uniform linear motion without being subjected to external forces.

The factor that maintains the state of motion of an object is inertia, i.e., the object will maintain its original state of motion unless an external force acts on it.

When we push a box, the box moves forward, but when we stop pushing, the box continues to move forward due to inertia until it encounters resistance or hits another object. In this process, force is what changes the state of motion of the box, while inertia is what maintains the state of fluid and motion of the box.

Hello Teacher! In this process, the supporting force of the inclined face of the block is always perpendicular to the direction of the movement of the block along the inclined plane, but the supporting force is still done because it is not perpendicular to the direction of motion of the object. So, what is the effect of the support force on the motion of an object?

In the whole process, the support force is always perpendicular to the object, so how does it hinder the movement of the object?

Reward score: 0 Hello students, it is recommended to choose the ground as the reference frame, that is, the inertial frame. The second problem you can understand by definition is that the force is obtuse with the displacement, so the negative work is done, which hinders the movement in the direction of the vertical bevel. An analogy can be made, for example, in a lift where an object is moving horizontally, the vertical elastic force will also promote or hinder the vertical movement of the object.

If the object is moving on the ground, not flying in the air, not swimming in the water, then it will definitely receive support from the ground. Otherwise, who will balance the gravitational force it is subjected to? If there is no ground to support it, the object is falling all the time.

Of course, if the object touches the ground in the process of motion, then it will definitely be subjected to the ** force of the ground.

The key is to use force and reaction to understand! The interaction of forces of two objects!

When at rest, the object is subjected to gravity g and oblique upward friction f and support fn, note that f and fn are provided by the oblique block! At the same time, the object also has a reaction force on the inclined block, a reaction force is f, the direction is the vertical inclined to the left, the other reaction force is fn, the direction is the vertical inclined to the right, and then the inclined plane itself has gravity and support force, force analysis, the support force t is exactly (m+m)g, note that at this time, the inclined plane is subjected to 4 forces!!

When the bevel is smooth. When the descent accelerates, it is still the action and the reaction. , the object is not subject to the frictional force provided by the inclined plane f., and likewise, the inclined plane is not affected by the reaction force of the object f

There is no f).At this time, the object is subjected to the force fn of the inclined plane, and at the same time, the inclined plane is also subjected to the reaction force, the magnitude is fn, and the direction is the vertical inclined to the right. At the same time, the object is also subjected to gravity mg, which supports the force t, and then the inclined plane is analyzed, t mg+mgcos cos

m+m)g-mgsin *sin Note that at this time, the inclined plane is subjected to 3 forces!!

**Drawn, but the computer doesn't recognize the phone, sorry, can't upload, you follow what I said, make your own picture.

This judgment is wrong. It was Aristotle who gave the i.

In modern science, Galileo pointed out: force is not the reason for maintaining motion, because motion does not need to be "maintained". According to Newton's first law, all objects always maintain their original uniform linear motion or stationary state until an external force changes this state.

This makes it clear that force is the cause of changing the state of motion of an object, not the cause of maintaining it.

From Newton's first law, it can be seen that an object will always remain at rest or in a uniform linear motion without external forces. At the same time, there are two effects of force: one is to change the shape of the object, and the other is to change the motion state of the object. So force is not what sustains the motion of the object.

Causes of the movement of matter.

Matter is in motion, and the moving matter is interconnected and interacting, and the contradiction between the most basic properties of matter, which is the maintenance of balance by inertia and the change caused by action, determines the motion attribute of matter, which in turn promotes the evolution of matter and the evolution of life, and promotes the development and change of things.

The motion of an object can be done without force.

a. Force is the reason for changing the motion state of the object, not the reason for maintaining the motion state of the object, a is wrong;

b. Without force, the object that imitates the motion of the Zen manuscript will move in a straight line at a uniform speed, and B is wrong.

c. The effect of force is to change the shape of the object, and it can also change the motion state of the object.

d. The two forces that balance each other are in opposite directions, so the three elements are different, and D is wrong, so C is chosen

A false, a stationary object is subjected to a balancing force and does not move; b pair, according to a=f m, by unbalanced force, there is acceleration a, and there is a change in the state of motion; c False, according to Newton's first law, an object subjected to an external force of 0 does not change its state of motion; d is false, and the conclusion can be drawn from Newton's first law. For example, the understanding of electric current, which can be associated with water flow, the resistance of different resistors is water pipes of different radii, and the capacitors of different capacities are reservoirs of different sizes. The reason why the capacitor is AC is that the reservoir has the function of storing and discharging water, and the process of storing and discharging water is also the process of energizing.

Of the statements about force and motion, the correct one is: b

I hope it helps you, and if you have any questions, you can ask them

I wish you progress in your studies and go to the next level! (*

Pick b A force is the reason for changing the state of motion of an object.

1 Because the object can move all the time in an ideal state but is not subject to force2, the gravitational force on an object moving forward is downward, if the resultant force may be opposite3, as long as a certain amount of net force is maintained, the object will carry out accelerated motion.4 A stationary object is always subject to the force of gravity.

One can be different.

For example, when the car brakes, the friction is backward and the car moves forward.

The second question is about acceleration, I don't know if you have learned it? When acceleration is in the same direction as velocity, it is acceleration.

Three questions this is inertia, for example, rolling marbles on a smooth level have no force in the horizontal direction, but they will still keep moving.

The motion of the object can be done without force.

1: The direction of motion of the force and the object is always the same? Not.

2: To accelerate an object forward, do you have to use more force? Not.

3: A force is something that is stored in an object in motion, and when the object has exhausted the force, the object stops? Not.

The motion of an object does not necessarily act forcefully on an object – when the object moves in a straight line at a uniform speed.

The force and the object are not necessarily moving in the same direction – when the magnitude of the force is "zero". Or when an object is in deceleration motion, the direction of the force is opposite to the direction of the object's motion.

To accelerate an object forward, it is enough to apply a force in the same direction of motion, and the magnitude of the force only affects the magnitude of acceleration.

The force is manifested by the interaction between objects, and if there is no interaction between objects, there is no force.