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The amount of work done on a machine is 300 j and the machine does 50 j of work. what can you say about the amount of friction that the machine has while operating?
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What are the 2kinds of friction?
Static Friction and Kinetic Friction. Static Friction is what friction that slows you down. While Kinetic friction is sliding friction.
What two factors influence friction force?
Dry friction and fluid friction. Dry friction resists motion of two solid surfaces in contact, while fluid friction describes the friction between layers of liquid that are moving relative to each other.
Can friction exist without gravity?
Yes, friction exists whenever two objects touch. Friction is caused by two effects: direct contact of mechanical surface irregularities and the electromagnetic force. It has nothing at all to do with the gravitational force, the strong force, or the weak force.
What friction is it if you were sitting?
There is no friction when you are sitting. In a car perhaps, friction does act on you while you are sitting. When going round a bend, the friction provided by the seat enable you not to move out of your seat (to a certain extent since sometimes we have to hold on to something so as not to fall out of our seat!)
When is friction not so useful?
When you drive a car and stop it is because of friction you stopped. If there was no friction your car won't stop and will slide. Friction also helps with waking, if there was no friction with every step you take you would slip. Friction lets your foot stay in one spot while you move the other foot. Ice has no friction so it is hard to walk on and hard to brake on (if driving a car.)
What is the difference between a ideal machine and real machine?
In ideal machine input is equal to output . The efficiency of ideal machine is 100% . In real machine input is not equal to output .The efficiency of ideal machine in not 100% . In ideal machine there is no lose of energy . In real machine there is lose of energy . In real machine there is no friction . While in real machine there is friction .
What is a dead man switch on a forklift?
If you pass out while operating the forklift, the machine will shut down.
Why machines are applied with grease?
It's to reduce friction (and thus heat) generated while the machine's parts are moving.
What is the difference between a computer and an operating system?
a computer is a machine for performing caculations automatically while an operating system is a software that contrls the execution of a computer
What is the kernel in an operating system?
The kernel is the core part of the operating system. The kernel handles the machine side of things, while the GUI handles the user side of things.
Is sales and total operating revenue the same thing?
Sales is the amount received from selling the goods while total operating revenue is the revenue which is earn only through basic business operating activity.
What are the 2kinds of friction?
Static Friction and Kinetic Friction. Static Friction is what friction that slows you down. While Kinetic friction is sliding friction.
What types of friction is experienced while surfing?
While surfing, you experience fluid friction.
How much acceleration is produced while applying a constant force without friction?
It depends on the amount of force force=distance*acceleration
Can generator power a washer machine?
A washing machine uses between a half and one horsepower while working. As one horsepower is equal to 746 watts per hour, it would be approximately 373 to 746 watts of power while operating
Why is it important to reduce friction on moving parts of machinery?
Friction creates heat. Heat could melt machine parts if it becomes too high. That's why many machines use lubricants while they're drilling or shaping metal.
Why are boats and ships streamlined?
The body of ships and boats are streamlined coz that they can experince minimum amount of Friction while moving through water
