Give one-word answers.
1. Device used for measuring the force acting on an object.
2. What is generated due to friction?
3. Name the force which opposes movement when two materials are brought in close contact.
4. What do we apply on machine parts to avoid friction?
5. Does friction occur in fluids?
Answers
Explanation:
1.DYNAMOMETER
2.When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into thermal energy (that is, it converts work to heat). This property can have dramatic consequences, as illustrated by the use of friction created by rubbing pieces of wood together to start a fire.
3.Friction is a force that opposes motion. When two objects are in contact, friction is acts in a direction opposite to the motion of the object .
4.When friction is undesirable we have to reduce the friction. Friction can be minimized by using lubricants like oil and grease and by using ball bearing between machine parts. A substance that is introduced between two surfaces in contact, to reduce friction, is called a lubricant.
5.Yes friction occurs in fluid.
Answer:
Explanation:
1. Spring balance is a device used to measure the force acting on an object
2. When surfaces in contact move relative to each other, the friction between the two surfaces converts kinetic energy into thermal energy (that is, it converts work to heat).
3. Friction force tries to stop relative motion between two surfaces in contact, if it is there, and when two surfaces in contact are at rest relative to each other
4. Friction can be minimized by using lubricants like oil and grease.
5. Friction is the force that opposes motion between any surfaces that are in contact. ... Static, sliding, and rolling friction occur between solid surfaces. Static friction is strongest, followed by sliding friction, and then rolling friction, which is weakest. Fluid friction occurs in fluids, which are liquids or gases.
The underlined words are the answers for the questions... and the rest is further information
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