Why Friction is important?

Q: Friction is self adjusting force. Why?

A: The static friction is a self adjusting force. Because it has neither direction nor fixed magnitude.…

Q: A runaway baby buggy that has a mass of 33 kg travels at a speed of 1.12 m/s down a level sidewalk.…

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Q: What are some examples of high and low friction?

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Q: The measurement of the amount of friction a surface will generate is called

A: Answer Coefficient of friction is the measure of the friction existing between two surfaces. a low…

Q: Name the few methods of increasing friction.

A: Below are some ways to increase friction between surfacesCreate a “rougher” or more adhesive point…

Q: What are three reasons why friction is needed?

A: Friction : The force resisting the relative motion of solid surfaces, against each other is called…

Q: Is friction useful?

A: Friction is useful in many ways in our daily life. Without friction, many life activities cannot be…

Q: what does friction do to motion of the skater?

A: what does friction do to motion of the skater?

Q: Rank the scale readings from most to least. (Ignore friction.)

A: Let the mass of the block be m, g be the acceleration due to gravity,   (A) The tension in the wire…

Q: The weight of body is an example of a body force

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Q: Which of the following cause high friction when an object slides across the floor? a rough surface…

A: Answersr are - a rough surface, a heavy object

Q: What is limiting friction?

A: The contact between two static surfaces  will generate some friction which is called limiting…

Q: A 5.20 N force is applied to a 1.05-kg object to accelerate it rightwards. The object encounters…

A: The expression for the acceleration from Newton’s second law is,

Q: What is the driving force between the two ends of

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Q: It hurts more to fall from a fast-moving bike than from a slow-moving bike.

A: When external force is applied then momentum of object will be changed .This change in linear…

Q: An object weighing 600N is suspended from two ropes that are attached to a ceiling 2.5 m apart. The…

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Q: What is the cause of friction?

A: Friction is a force that resists the relative motion between two objects or materials. The causes of…

Q: Why is static friction?

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Q: A box of cereal with a weight of 3.8 N is at rest on the kitchen counter. What is the normal force…

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Q: What Causes Friction?

A: Friction is a force that resists the relative motion between two objects or materials. The causes of…

Q: If you increase your push, what happens to f,? O Increase Decrease No change

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Q: What do you think makes something have a higher coefficient of friction?

A: Coefficient of friction is the measure of force of friction between two surfaces in contact. More…

Q: A rightward-moving car is skidding to a stop across a level roadway with locked wheels. Ignore air…

A: Given: The car is moving in the rightward direction. The air resistance on the car is zero. The…

Q: An elevator accelerates upward at 6.6 m/s ^ 2 A passenger with amass of 64 kg stands on the scale…

A: Given data: Acceleration of elevator (a) = 6.6 m/s2, upward Mass of passenger (m) = 64 kg…

Q: Two blocks rest on frictionless inclines  and are connected by a lightweight string that passes over…

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Q: What are the laws of Limiting Friction?

A: Following are the laws of limiting friction :   The direction of limiting frictional force is…

Q: A shopper is pushing a cart as shown. He applies a force of 15 degrees below the horizontal.…

A: We are authorized to answer one Question at a time, since you have not mentioned which question you…

Q: The kinetic friction is applied when the body is Select one: O a. Just stopped O b. Moving O c. Just…

A: Required :  When is the kinetic friction applied.

Q: A car with a mass of 1.2 tons generates a force of 2000 Newtons to accelerate the car

A: Given : m = 1.2 tons = (1.2)(1000) = 1200 kg F = 2000 N

Q: A 9.0-kg hanging weight is connected by a string over a pulley to a 5.0-kg block sliding on a flat…

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Q: A box on the ramp of a moving truck is held in place by friction (so static friction is strong…

A: Scenario: A box is set on ramp of a moving truck & held in place by friction as static friction…

Q: on a mountainside that slopes kg sled up the slippery inclin of kinetic friction is 0.100. an exert…

A: A camp is on the mountainside that slopes 300 and sled up the mass of m = 200 kg, the coefficient of…

Q: What is dry friction?

A: Dry friction describes the reaction between two solid bodies in contact when they are in motion…

Q: Friction is necessary evil. Why?

A: Friction is necessary evil because it is harmful as well as useful for us.

Q: A boat is pulled into a dock by means of a winch 2 meters above the deck bf the boat (see figure).…

A: Solution: Here, the speed of the boat is 1.5m/s. Calculate the horizontal distance covered by the…

Q: Name four different method of reducing friction.

A: There are a number of ways to reduce friction:Make the surfaces smoother.Lubrication is another way…

Q: What is the use of spring balance?

A: A spring balance measures the weight of an object by opposing the force of gravity acting with force…

Q: A 9.0-kg hanging weight is connected by a string over a pulley to a 5.0-kg block sliding on a flat…

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Q: What do you mean by friction?

A: Friction is the force which always opposes the relative motion between the two surfaces.

Special Relativity

The theory of special relativity discusses how space and time are related to objects traveling along a straight line at a constant speed. Simply stated, as an object reaches the speed of light, its mass becomes infinite and it is unable to move faster than light. This interstellar speed limit has been the topic of much debate in astronomy, and also in science fiction when people consider how to fly over large distances.