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If a hockey puck is set in motion across a frozen pond if ice friction plus air resistance are neglected the force required to keep the puck sliding at a constant velocity is?
Wiki User
∙ 14y ago
If you have eliminated all resistance then the initial force will be enough.
Wiki User
∙ 14y ago
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How does inertia work?
It is exactly the same as momentum and covered by Newton's first law of motion. Inertia is a way of expressing the force required to get an object to move from rest, or the force required to change the velocity or direction of an object in motion. Anything that has mass will have inertia - a "resistance to move or change velocity or direction of motion".
What is the principle of inertia?
The principle of inertia No force is required to maintain motion with constant velocity in a straight line, and absolute motion does not cause any observable physical effects. In layman's terms: An object that is moving will keep moving until something stops it.
In what year did congress pass the selective service act which required all male citizens to register for military draft upon turning eighteen?
Probably during WWII; it was constant because of the cold war...and didn't end until the Vietnam War.
How much did ancient Egyptian metal workers get paid?
People didn't get paid like we do today. They got food, some got housing while working on the pyramids. Workers on the pyramids were a combination of slave labor and required work for the population. Copper tools were used and this required constant reworking and making the tools since copper is a soft metal and doesn't last long.
What was the major cause of shayss rebellion?
Taxes required of poor farmers
What are the conditions required to swing continuously in air?
absence of friction...no air resistance
Is the force required to keep a rocket ship moving at a constant velocity in deep space equal to the ship's weight?
No. Without friction or air resistance, no force is required to keep an object moving at a constant velocity. Also, by the way, just thought we should mention: In deep space, the ship has no weight.
What is the formula for horsepower needed to carry 6000 pounds at 55 mph?
I assume you want to transport this on a train, or truck, or something like that. There is no simple relationship. Basically, the only power required to transport something at constant speed is the power required to overcome friction (otherwise, with no friction, zero power would be required to maintain the speed.) However, friction on the road or rails can vary; air resistance can vary depending on the shape of the train or truck, and even on the wind.
How much power required to propel a ship while resistance is neglected?
The power to propel a ship is dependent on a number of things besides resistance. You must consider the size of the ship, its weight, and its passenger's weight before you can determine the power required to move it.
What is kinetic friction and static friction?
Friction is the resistance to movement of an object pressing/resting/moving on a surface. It's not intuitively obvious but the standing still friction and moving friction are different. Assume you have a block of wood resting on a tabletop. The amount of force required to make the block begin to move (static friction) is greater than the force required to keep it moving (kinetic friction) after it has begun to move.
Why don't you do any work when you carry an object at a constant velocity?
I have no idea why you don't do any work when you carry an object at constant velocity. In a vehicle, you would have rolling resistance and wind resistance. On any other surface, you would have friction. Of course, once you put the object into motion, the energy required to keep it in motion would be less than that required to get it there. Even if you put something into orbit the orbit would slowly decay according to the gravitational section of the Theory of Relativity.
A force of 320 N is required to pull a box across the floor at a constant velocity What is the force of friction between the floor and the box?
It's 320 N. Since the friction force is in the direction opposite to the motion, thepulling force and the friction force balance, the net horizontal force on the box iszero, and its speed is therefore constant.
How could you measure frictional force?
For dynamic friction, measure the force required to maintain a constant speed. If you have to pull with 300 N to maintain a constant speed, then friction is pulling back with 300 N. (If the forces were not balanced, there would be an acceleration.) For static friction, see how much force you need to apply before the object starts moving.
When your car moves along the highway at a constant velocity the net force is 0 why then do you continue running your engine?
When moving at a constant speed or velocity, the vehicle is no longer accelerating, however there is still resistance to motion mostly from friction. The largest factors are wind resistance and road friction. It causes drag and is constantly trying to slow the car down, requiring some degree of constant power, so the net force is never truly zero. If we could eliminate wind resistance, by let's say driving with a tail wind exactly the same speed as our forward velocity - making wind resistance zero - the power required to maintain velocity would be much less. However, there would still be drag from friction between the road and tires. Friction from moving parts inside the engine, transmission and drive axles as well as rolling resistance from the tires. Tires have treads to actually generate resistance, as the resistance they provide are required for changes in momentum essential to basic motoring -- accelerating, turning and decelerating (braking/slowing). A car with no road resistance in its tires would be able to maintain a given velocity with a lot less power, but would be impossible to grip the road to accelerate to that velocity, and would be unable to turn or slow down unless they struck another object. There is no way to eliminate the need for power at a constant speed, but there are many things we can do to reduce the amount of power we need. Speed limits were put in place to increase fuel efficiency - the national 55 limit arose from a concern about fuel consumption. The design of modern cars takes aerodynamics into consideration to reduce drag caused by wind resistance. There are also steps drivers can take, like making certain your tires are properly inflated, and changing air filters and oil regularly. These all contribute to making the vehicle as efficient as possible.
How much minimum torque is required by a turbine to generate Electricity?
initial torque to overcome the friction in generator and then to keep constant speed of stator within the generator. Minimum 50NM
Is a force needed to keep a moving spacecraft moving in a straight line?
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.
Time constant of an RC circuit increases if the value of the resistance is?
Answer : increase The time required to charge a capacitor to 63 percent (actually 63.2 percent) of full charge or to discharge it to 37 percent (actually 36.8 percent) of its initial voltage is known as the TIME CONSTANT (TC) of the circuit. Figure 3-11. - RC time constant. The value of the time constant in seconds is equal to the product of the circuit resistance in ohms and the circuit capacitance in farads. The value of one time constant is expressed mathematically as t = RC.
