coefficient of friction = force required to move it / mass
0.8 = f / 300
0.8 * 300 = f
240(slugs) = f
It depends where the space craft is. If it is in deep space far away from any large mass (like a planet, star, etc) then the answer is no. If it is close to a mass then the answer is yes. An equal and opposite force is required to balance the gravitational force to keep it moving in a straight line.
Without friction, the players would have trouble moving, as friction between their feet and the ground is part of what allows a person to walk or run. It would also be more difficult to make the ball start moving, or effectively catch it as friction helps grip the ball. It would also be more difficult to stop opposing players as friction between a tackler and the person being tackled is a large part of what allows the tackle to happen in many cases. Without friction, feet would simply slide along the ground rather then gripping it to propel a player forward or stop him, and the ball would be so slippery it would be nearly impossible to hold onto without completely cradling it.
Friction is generally described as either sliding or rolling friction. You could devise any number of instruments to measure it. If you moved a given surface area (say a block) across another surface under pressure from above (say weight) then you could measure the force needed to accelerate the block to a certain velocity. You need a stopwatch, a spring balance (to measure force) and some maths. JCF
Static
Yes, that's a firm. Net force is needed in order to change the speed or direction of moving matter. Uh huh.
A force is needed to start something moving and to stop it once it is moving. A force can make something speed up or slow down. Friction is a force generated when surfaces move across each other.
The frictional force needed to just stop something from moving is called limiting friction, and the object is said to be in limiting equilibrium.
Static friction is the friction that acts between two objects which are not moving in relation to each other. For example, it is the force that prevents you a block from sliding down a ramp with a small incline. Dynamic friction is the friction that acts between two objects which are moving in relation to each other. For example, it is the force that makes pushing a heavy box across the floor difficult.
i cant find the answer! I think it is blanced
false. Kinetic friction is the friction acting upon a moving object. It would be the frictional force against you if you pulled a box across a table. Static friction is the frictional force needed to overcome to get an object at rest into motion.
By my understanding, this is due to the fact that it is easier to keep a moving object in motion than it is to accelerate it from a resting position. When a force is exerted on a stationary object, acceleration relies on that force alone. However, with a moving body, the momentum of the object reduces the force needed to overcome friction.
Gravity - and friction. The larger book has more gravity - holding it own onto the desk. Friction stops the book sliding sideways.
While the box is moving in a straight line at a constant speed, the push only has to overcome the kinetic friction. Whatever the speed is, and whatever the weight of the box is, 4 pounds of push IN THE DIRECTION THE BOX IS MOVING will keep this one going.
This coefficient of static friction is needed to find the frictional force between a body and a surface on which body has to move. If u (mu) is the coefficient of friction then uR gives the frictional force between moving body and surface. There is no unit for coefficient of friction. Here R is reaction which equals to the weight of the body
It depends where the space craft is. If it is in deep space far away from any large mass (like a planet, star, etc) then the answer is no. If it is close to a mass then the answer is yes. An equal and opposite force is required to balance the gravitational force to keep it moving in a straight line.
An outside force is needed. If friction comes into play (which it likely will), the magnitude of the applied force must be greater than the force of friction acting upon the object in order for the object to move. FYI, the force of friction is equal to the coefficient of static friction times the normal force (equal to the weight of the object).
when machines are used