The friction experienced by a body, when in motion, is known asa)rolling frictionb)dynamic frictionc)limiting frictiond)static frictionCorrect answer is option 'B'. Can you explain this answer?

Question

Answer

Friction is categorized in two parts. Dynamics and static friction. Body is moving here so static friction will be eliminated. And not mention about rolling. so rolling friction also eliminated, no concern of force and reactions here so limiting friction is not playing vital role here. Only option remaining is DYNAMIC FRICTION. Or directly we can say wherever body is in motion dynamic friction are there.

Answer

Static means no motion ,
dynmo means motion ,
as it is not mentioned that it's rolling motion hence only dynamic friction is best suited.

Answer

Dynamic friction

Answer

B

Answer

Limiting friction is the max. Valve at which the body starts sliding.
Static friction is the friction it wont allow the body to move it resists the applied force. When we increase force then it will move when it force reaches to beyond the friction valve.
Dynamic friction comes when a body under motion this valve is lower than limiting friction

Answer

B is correct answer bcs dynamic means motion and motion so friction obyusly present

Answer

Y

Answer

As mentioned in question that body is in motion, so when two surface have contact with each other then they have relative motion with respect to other it is called as kinetics. The body experience friction due to gravtiational drag force acts on it due to motion.
the only answer is Dynamic Friction. ( In Dynamic motion we are dealing with Kinetics & kinematics )

Answer

Here body is experiencing the motion ,so static friction is rolled out from option.No rolling action by body.Limiting friction is the maximum of force to act against the force applied.There is no external force applied.friction on the body will be dynamic.

Answer

Basically friction is divided into two categories static friction and dynamic friction. All body under rest feels static friction ie friction experienced at rest or stationery. Every body happens to be in motion experiences a friction which is named as dynamic friction. hence the answer can be selected as option 'b' dynamic friction.

Answer

Friction Types and Definitions

Friction is a force that opposes the relative motion between two surfaces in contact. It is present in various forms depending on the nature of the surfaces and the conditions under which the objects are in motion. The different types of friction include:

1. Rolling Friction:
- Definition: Rolling friction occurs when a cylindrical object rolls over a surface.
- Example: The friction experienced by a wheel rolling on the ground.

2. Dynamic Friction:
- Definition: Dynamic friction, also known as kinetic friction, occurs when two surfaces slide against each other.
- Example: The friction between a sled and snow as it slides downhill.

3. Limiting Friction:
- Definition: Limiting friction, also known as maximum static friction, is the force required to initiate motion between two surfaces in contact.
- Example: The friction between a stationary object and the surface it rests on just before it starts to move.

4. Static Friction:
- Definition: Static friction is the force that prevents two stationary surfaces from sliding against each other.
- Example: The friction between a book placed on a table that prevents it from sliding off.

Explanation of the Correct Answer

The correct answer to the given question is option 'B' - dynamic friction. Dynamic friction is experienced by a body when it is already in motion, sliding, or moving against another surface. It is the resistance encountered by the body in motion due to the interaction between the two surfaces.

Dynamic friction is caused by the irregularities present on the surfaces in contact. These irregularities create interlocking points between the two surfaces, resulting in resistance to motion. The magnitude of dynamic friction depends on factors such as the nature of the surfaces, the normal force pressing the surfaces together, and the presence of any lubricants or contaminants.

When a body is already in motion, the dynamic friction opposes its motion and acts in the opposite direction. It can be calculated using the equation:

Dynamic Friction Force = Coefficient of Dynamic Friction × Normal Force

The coefficient of dynamic friction is a dimensionless constant that depends on the nature of the surfaces in contact. It represents the roughness or smoothness of the surfaces. The normal force is the force exerted perpendicular to the surfaces in contact.

In summary, dynamic friction is the type of friction experienced by a body already in motion. It is caused by the irregularities on the surfaces in contact and opposes the motion of the body.

Answer

Dynamic conditions arises when body is in motion.

Answer

Dynamic friction when body is moving otherwise body is in static condition friction occurs its called static friction same as rolling and limiting friction

Answer

At every motion of body, there is a point touched with ground will experience friction in opposite direction of motion and that is always static at every step and at that point will expreince rolling as well as friction friction. so at that point is static friction with acceleration alpha.r. But during motion of whole body when in the direction of body sit on the body and for t=0 second you will feel no motion. at t=t1 second a small jerk you will experience kinetic energy with velocity v. and hence you are experiencing Dynamic friction or say kinetic energy friction. You will feel someone is pulling you towards and hence so your body is moving. so Dynamic friction. potential energy us 0 because the body is on plane with 0 height. Here the body suppose raised at some height say z on a mountain then potential energy as well as kinetic energy will experience then also the case is Dynamic friction.

Answer

Limiting friction is the max limit of static friction i.e. when the body is on the verge of sliding, rolling friction is the one which resists the sliding of rolling body ,since the body might be in general motion hence dynamic friction will be the answer.

Answer

Dynamic

Answer

Dynamic is some thing in active state or motion so fricton associated with it is dynamic friction.

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