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The frictional force opposing the motion of the box is equal to the applied force of 375N. Since the box is moving at a uniform speed, the force of friction is equal to the force applied by the person pulling the box. This means that the force of friction is equal to 375N, which is equal to the force needed to move the 300kg box.
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What force is acting on a body moving with uniform speed on a perfectly smooth road?
1) There are always frictional forces, which by themselves would slow the car down. 2) Since we are assuming that the car is moving at a uniform speed, there must be another force to compensate for the friction, and in the opposite direction (pulling the car forward). This force is related to the effort done by the engine.
What are the horizontal components of accelaration of a body when thrown horizontally with unifornm speed?
When a body is thrown horizontally with uniform speed, there is no change in the horizontal velocity, so the horizontal component of acceleration is zero. The only acceleration acting on the body is due to gravity in the vertical direction.
A projectile is thrown with an initial velocity which has a horizontal component of 4 m s What will be its horizontal speed after 3s?
The horizontal speed of the projectile remains constant as there is no force acting in the horizontal direction to change it. Therefore, the horizontal speed of the projectile after 3 seconds will remain at 4 m/s.
When constant force is applied to a body then it does it moves with uniform speed?
When a constant force is applied to a body in the absence of other forces, it will accelerate according to Newton's Second Law (F=ma). If the force is balanced by friction or other opposing forces, the body will move with a constant velocity, resulting in uniform speed.
Is there an angle for the plane at which no horizontal force can keep the mass moving at constant speed?
Yes, the angle is when the force of gravity acting parallel to the incline is greater than the force needed to maintain constant speed. This angle is known as the critical angle of incline. At this angle, no amount of horizontal force will be able to keep the mass moving at a constant speed and it will start accelerating down the incline.
What force is acting on a body moving with uniform speed on a perfectly smooth road?
1) There are always frictional forces, which by themselves would slow the car down. 2) Since we are assuming that the car is moving at a uniform speed, there must be another force to compensate for the friction, and in the opposite direction (pulling the car forward). This force is related to the effort done by the engine.
What are the horizontal components of accelaration of a body when thrown horizontally with unifornm speed?
When a body is thrown horizontally with uniform speed, there is no change in the horizontal velocity, so the horizontal component of acceleration is zero. The only acceleration acting on the body is due to gravity in the vertical direction.
How must the net force depend on the speed of the moving object in order to obtain uniform circular motion?
The force required to keep a body to be in a uniform circular motion is known as centripetal force means centre seeking force. This centripetal force is directly proportional to the square of the speed of the particle.
A projectile is thrown with an initial velocity which has a horizontal component of 4 m s What will be its horizontal speed after 3s?
The horizontal speed of the projectile remains constant as there is no force acting in the horizontal direction to change it. Therefore, the horizontal speed of the projectile after 3 seconds will remain at 4 m/s.
What happens when you apply force in an object in space?
It accelerates as long as the force is applied, and after that it continues at a uniform speed and direction.
If you exert a horizontal force of 600N to slide an object across the floor at a constant speed is the force of friction between the object and the floor greater than less than or equal to 600N?
Since the object is moving at a constant speed, the net force on it must be zero.If I'm applying a constant horizontal force, then the frictional force must be equal to my force = 600N and in the opposite direction to my force.
3 What factors affect the increase of the centripetal force on a particle in uniform circular motion?
The centripetal force on a particle in uniform circular motion increases with the speed of the particle and the radius of the circular path. The mass of the particle also affects the centripetal force, as a heavier particle requires a stronger force to keep it moving in a circle at a constant speed.
How fast is an object going if its speed and time graph is horizontal?
An object can only gain speed if there is a net force on it. If a net horizontal force acting on an object is large enough, or acts for a long enough time, the object can aquire a speed up to just under the speed of light, 3 x 10^8 m/s.
When constant force is applied to a body then it does it moves with uniform speed?
When a constant force is applied to a body in the absence of other forces, it will accelerate according to Newton's Second Law (F=ma). If the force is balanced by friction or other opposing forces, the body will move with a constant velocity, resulting in uniform speed.
Is there an angle for the plane at which no horizontal force can keep the mass moving at constant speed?
Yes, the angle is when the force of gravity acting parallel to the incline is greater than the force needed to maintain constant speed. This angle is known as the critical angle of incline. At this angle, no amount of horizontal force will be able to keep the mass moving at a constant speed and it will start accelerating down the incline.
Is a ball rolling down a ramp uniform motion?
No, a ball rolling down a ramp is not considered uniform motion because its speed changes as it moves due to the force of gravity. Uniform motion occurs when an object moves in a straight line with a constant speed.
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
