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If you push a crate at constant velocity how does friction acting on the crate compare with your pushing force?
Wiki User
∙ 13y ago
If a wagon is moving at a constant velocity, the total applied force must equal the frictional forces that resist the continued motion of the wagon. If they were not equal, the wagon would accelerate. In positive acceleration, it would speed up, and in negative acceleration, it would slow down. Think it through and you'll see that this is the only answer that makes sense. And not only does it make sense, it is true. The laws of physics are in force here.
Wiki User
∙ 15y ago
Wiki User
∙ 14y agoIf you push a chair across the floor at constant velocity, the force of friction is equal to the force you exert multiplied by cos(the angle you are pushing at, measured relative to the floor). This is because if the chair is not accelerating the net force is 0. F=ma, a=0, then F=0. You may hear that the forces are equal but this is only true if you are pushing parallel to the floor, straight into the chair.
Suppose you are pushing at an angle of 45 degrees downward, cos(45)*Fapplied will be forcing the chair downward, increasing the normal force, but only cos(45)*Fapplied will be negating the effects of friction.
Therefore the forces are not necessarily equal, the force of friction is equal to the force exerted multiplied by cos of the angle the applied force makes with the floor.
Wiki User
∙ 13y agoFriction force is exactly equal to the force you are applying (that is, if you push it in the straight like with no angle to the horizontal). Since there is no acceleration, the body (crate) must be in the equilibrium state. If there is an angle to the horizontal, then frictional force is less than your pushing force.
Wiki User
∙ 12y agoThe force of friction is opposite to the direction of the vehicle for the most part. You could say maybe there is a breeze blowing against the side of the car, then the frictional force can also have a side component that keeps the car from moving sideways, but I would say opposite for simplicity sake.
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What happens to the forces of an object when it reaches a constant speed?
An object maintains a constant velocity when the net force acting upon that object is zero. Therefore, a force pushing against the object that exactly opposes the force(s) due to friction (in both magnitude and direction) will result in a net force of zero, and the object will maintain a constant speed.
If an object has a natural tendency to move with constant velocity why do you need to keep pushing a cabinet to move it with constant velocity?
If the cabinet is on a floor, it is being acted upon by earth's gravity and friction with the floor. Newton's law says an object in motion will continue in motion unless acted upon by another force. Consider the outside forces acting on the cabinet. They are acting on the cabinet to slow it down, and you need to keep pushing it to overcome them and keep the cabinet moving.
A horizontal force of 100 N pushes a box across a floor at a constant speed. what is the force of friction acting on the box?
If the horizontal velocity is constant, then the horizontal acceleration is zero,and the net horizontal force is zero.But if you are saying that the body was in constant motion and after that the force was applied, then the body will acccelerate because of the force. The net force applied on the body would be equal to the force applied to it when the body was in constant motion as here the force is in direction of the motion and hence the angle will be 0 giving the value of cos 0º as 1. Hence there would be no reduction in the net force
When you are pushing on a large door friction keeps you from sliding backwards?
static friction
What causes a box you are pushing across the floor to stop when you stop pushing?
Static Friction
If a car is traveling on the highway at a constant velocity the force that pushes the car forward must be?
1. force that moves a car forward is the friction force between the tires and the road (ignoring what is going on mechanically in the car) 2. if the car is travelling at constant velocity, net force is zero - forces pushing car forward are equal to forces pushing car back
How is an able to maintain a constant speed when friction acts upon it?
An object maintains a constant velocity when the net force acting upon that object is zero. Therefore, a force pushing against the object that exactly opposes the force(s) due to friction (in both magnitude and direction) will result in a net force of zero, and the object will maintain a constant speed.
If you push a crate at constant velocity how do you know how much friction acts on the crate compared to your pushing force?
When an object moves at a constant velocity, all forces acting on it must add up to zero. In the case of the crate on a horizontal surface, where the pushing force is directly horizontal (not down and horizontal), then the human push force must be equal and opposite to the friction force. In the case where the plane is inclined and/or where the human force isn't directly along the surface, we need to know the angles, component-ize all forces (human push force, normal force, friction, and weight), balance forces in the direction perpendicular to the plane (so it will not sink through the plane), and balance forces parallel to the plane (if it is to move at a constant velocity).
What happens to the forces of an object when it reaches a constant speed?
An object maintains a constant velocity when the net force acting upon that object is zero. Therefore, a force pushing against the object that exactly opposes the force(s) due to friction (in both magnitude and direction) will result in a net force of zero, and the object will maintain a constant speed.
If an object has a natural tendency to move with constant velocity why do you need to keep pushing a cabinet to move it with constant velocity?
If the cabinet is on a floor, it is being acted upon by earth's gravity and friction with the floor. Newton's law says an object in motion will continue in motion unless acted upon by another force. Consider the outside forces acting on the cabinet. They are acting on the cabinet to slow it down, and you need to keep pushing it to overcome them and keep the cabinet moving.
An 80kilogram skier slides on waxed skis along a horizontal slope of snow at constant velocity while pushing with his poles What is the horizontal component of the force pushing him forward?
40 newtons. give the explanation of this
Think Critically A book sliding across a table slows down and comes to a stop Explain whether the forces acting acting on the book are balanced or unbalanced.?
The forces are unbalanced. The force of Friction is obviously greater than whatever force is pushing the book in the direction of travel, if one is pushing it at all. If the forces on the book were balanced, the book would continue to slide with a constant velocity.
A horizontal force of 100 N pushes a box across a floor at a constant speed. what is the force of friction acting on the box?
If the horizontal velocity is constant, then the horizontal acceleration is zero,and the net horizontal force is zero.But if you are saying that the body was in constant motion and after that the force was applied, then the body will acccelerate because of the force. The net force applied on the body would be equal to the force applied to it when the body was in constant motion as here the force is in direction of the motion and hence the angle will be 0 giving the value of cos 0º as 1. Hence there would be no reduction in the net force
When you are pushing on a large door friction keeps you from sliding backwards?
static friction
When pushing a coin on a surface does that create friction?
Yes. Friction is the resistance between an object and the surface in which it is. When pushing the coin, an opposite force is pushing it the other way, because the forcce you apply to the coin is greater it moves but that doesn´t mean there is no friction.
When do gravity get weaker?
when friction is pushing against it
What causes a box you are pushing across the floor to stop when to stop pushing?
Static Friction
