What is the horizontal force F
Publish: 2021-05-21 21:15:28
1.
The situation is shown in the figure below
For ball a and ball B, the supporting force of ball C was na.mb, and the two forces were decomposed into horizontal and vertical directionscan be seen. The gravity of c-ball g = M2 + N2 and M2 = N2
it is easy to find the left and right component forces by using the three solution function
. This component is the minimum of F
2. Under the action of horizontal constant force F,
A1 = V / T1 = 4 / 4 = 1m / S ^ 2
remove horizontal constant force F, only under the action of friction F,
A2 = V / T2 = 4 / 6 = 2 / 3
m / S ^ 2
F = ma2
F = f-f = MA1
F = F + MA1 = ma2 + MA1 = 4 / 3 + 2 = 10 / 3
A1 = V / T1 = 4 / 4 = 1m / S ^ 2
remove horizontal constant force F, only under the action of friction F,
A2 = V / T2 = 4 / 6 = 2 / 3
m / S ^ 2
F = ma2
F = f-f = MA1
F = F + MA1 = ma2 + MA1 = 4 / 3 + 2 = 10 / 3
3. The picture shows that f acts on point B, and the direction of F force is perpendicular to the horizontal plane.
then the torque of F to X axis is 60 × 4＝240N·cm; The torque of F to y axis is 60 × 3＝180N·cm; The moment of F to Z axis is 0
then the torque of F to X axis is 60 × 4＝240N·cm; The torque of F to y axis is 60 × 3＝180N·cm; The moment of F to Z axis is 0
4. Calculation:
in physics, the tendency of an object to rotate around a rotating axis or fulcrum caused by a force is called torque. Rotational torque is also called torque. Torque can change the rotational motion of an object. Pushing or pulling involves forces, while torsion involves moments. The moment is equal to the cross proct of the radial vector and the applied force. In short, a moment is a torsional force applied to an object such as a bolt or flywheel
for example, clamp the bolt or nut with the opening of the wrench, and then turn the wrench, which will generate torque to turn the bolt or nut. According to the international system of units, the unit of moment is Newton meter; According to English units, the unit of moment is foot pounds. The symbol of moment is Greek letter
or torque is related to three physical quantities:
the applied force and the angle between the displacement vector from the rotating shaft to the force application point. The moment is expressed by the equation. The magnitude of the moment is. Among them θ It's the angle between R and F. This is the so-called cross proct. The calculation method is that two moments are equal to the force acting on the lever multiplied by the vertical distance from the fulcrum to the force
for example, a 3-newton force applied 2 meters away from the fulcrum proces a moment equal to a 1-newton force applied 6 meters away from the fulcrum. The moment is a vector. The direction of the moment is in the same direction as the axis of rotation of the rotational motion it causes. The direction of the moment can be determined by the right-hand rule. Suppose the force is perpendicular to the lever. Bend the right hand to the rotation direction of the lever, and the straight thumb is in line with the rotation axis of the fulcrum, then the thumb points to the direction of the moment. The direction of the moment is determined by the right-hand rule. The moment shown in the figure above is perpendicular to the inside of the paper. This is the direct calculation method of moment, but it is more indirect calculation.
in physics, the tendency of an object to rotate around a rotating axis or fulcrum caused by a force is called torque. Rotational torque is also called torque. Torque can change the rotational motion of an object. Pushing or pulling involves forces, while torsion involves moments. The moment is equal to the cross proct of the radial vector and the applied force. In short, a moment is a torsional force applied to an object such as a bolt or flywheel
for example, clamp the bolt or nut with the opening of the wrench, and then turn the wrench, which will generate torque to turn the bolt or nut. According to the international system of units, the unit of moment is Newton meter; According to English units, the unit of moment is foot pounds. The symbol of moment is Greek letter
or torque is related to three physical quantities:
the applied force and the angle between the displacement vector from the rotating shaft to the force application point. The moment is expressed by the equation. The magnitude of the moment is. Among them θ It's the angle between R and F. This is the so-called cross proct. The calculation method is that two moments are equal to the force acting on the lever multiplied by the vertical distance from the fulcrum to the force
for example, a 3-newton force applied 2 meters away from the fulcrum proces a moment equal to a 1-newton force applied 6 meters away from the fulcrum. The moment is a vector. The direction of the moment is in the same direction as the axis of rotation of the rotational motion it causes. The direction of the moment can be determined by the right-hand rule. Suppose the force is perpendicular to the lever. Bend the right hand to the rotation direction of the lever, and the straight thumb is in line with the rotation axis of the fulcrum, then the thumb points to the direction of the moment. The direction of the moment is determined by the right-hand rule. The moment shown in the figure above is perpendicular to the inside of the paper. This is the direct calculation method of moment, but it is more indirect calculation.
5. When the wood rises at a constant speed, the force is balanced and the direction of friction is downward. In the direction of inclined plane, the component force of F = the component force of gravity + friction force
fcos θ= mgsin θ+μ mgcos θ< br />F=(mgsin θ+μ mgcos θ)/ cos θ
fcos θ= mgsin θ+μ mgcos θ< br />F=(mgsin θ+μ mgcos θ)/ cos θ
6. In question setting state
the force analysis of M 'is carried out: gravity and supporting force. The resultant force of the two forces makes the small object move with the inclined plane in the horizontal direction
the resultant force and the acceleration of M 'can be calculated from the force triangle, and then for the whole body, the friction force and thrust force are applied in the horizontal direction; There's an acceleration. It is not difficult to determine the horizontal thrust: (M & # 39+ m)*(tg α+μ)* G
too few reward points
you can see that there are few answers.
the force analysis of M 'is carried out: gravity and supporting force. The resultant force of the two forces makes the small object move with the inclined plane in the horizontal direction
the resultant force and the acceleration of M 'can be calculated from the force triangle, and then for the whole body, the friction force and thrust force are applied in the horizontal direction; There's an acceleration. It is not difficult to determine the horizontal thrust: (M & # 39+ m)*(tg α+μ)* G
too few reward points
you can see that there are few answers.
7. Pulling force is equal to gravity
F = g
G = mg
this is common.
if it is in the title, it depends on the condition of the title
F = g
G = mg
this is common.
if it is in the title, it depends on the condition of the title
8. According to the principle of Li's synthesis, the parallelogram of the force is drawn, which shows that:
F = GTN θ= fcos θ
F = GTN θ= fcos θ
9. Is the resultant force f the horizontal force C
if it is, then after orthogonal decomposition,
fcosa = mgsina + B (mgcosa + fsina)
F (COSA bsina) = mgsina + bmgcosa
divide again
if it is, then after orthogonal decomposition,
fcosa = mgsina + B (mgcosa + fsina)
F (COSA bsina) = mgsina + bmgcosa
divide again
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