Question
Which of the following is not an example of friction?
- Image of brakes being applied
- Image of a person putting the handout
- Image of a satellite traveling in space
- Image of a football rolling in the ground
Hint:
Friction is contact force it occurs when there is contact between two bodies
The correct answer is: Image of a satellite traveling in space
- Friction, is a force that resists the sliding or rolling of one solid object over another
- Friction is contact force
- Friction is a surface effect and doesn't depend upon there being air.
- In all the options given above only satellite is there which is not in contact with any other object so no friction will take place there
Related Questions to study
If the irregularities of the surfaces shown in the figure decreases, the friction will _____.
If the irregularities of the surfaces shown in the figure decreases, the friction will _____.
If the irregularities of the surfaces shown in the figure increases, the friction will ____.
If the irregularities of the surfaces shown in the figure increases, the friction will ____.
What is the figure showing?
What is the figure showing?
A lubricant _____.
A lubricant _____.
If we spill oil on the floor, the friction of the floor will
If we spill oil on the floor, the friction of the floor will
A toy with wheels released with the same initial speed will travel farthest on a ______.
A toy with wheels released with the same initial speed will travel farthest on a ______.
Which of the following is not a smooth surface?
Which of the following is not a smooth surface?
Which of these affect the force of friction?
Which of these affect the force of friction?
SI Unit to measure friction is
SI Unit to measure friction is
“More is the pressure exerted on the surface, more will be the friction.”
“More is the pressure exerted on the surface, more will be the friction.”
A car is turning on a turn and suddenly a pool of water appears on the road. Which diagram best shows how the pool of water will affect the path of the car after the car goes through it.
A car is turning on a turn and suddenly a pool of water appears on the road. Which diagram best shows how the pool of water will affect the path of the car after the car goes through it.
Sameer is riding his mountain bike. Where does he require less friction?
Sameer is riding his mountain bike. Where does he require less friction?
Smrita is climbing a mountain. How much friction does she need?
Smrita is climbing a mountain. How much friction does she need?
Jack is going skiing. How much friction does he need?
Jack is going skiing. How much friction does he need?
How does friction affect speed?
Friction is the force opposing one solid object's movement over another. Four categories of friction exist fluid friction, rolling friction, sliding friction, and static friction.
¶The frictional force keeps our feet planted on the ground when we walk on or on the floor. As a result, we frequently slip on icy or slippery surfaces because there is less friction.
¶According to scientists, friction is caused by the interactions of tiny bumps on surfaces as they rub against each other. The bumps on each surface bend and exert force on each other, making it difficult for the surfaces to slip over each other.
How does friction affect speed?
Friction is the force opposing one solid object's movement over another. Four categories of friction exist fluid friction, rolling friction, sliding friction, and static friction.
¶The frictional force keeps our feet planted on the ground when we walk on or on the floor. As a result, we frequently slip on icy or slippery surfaces because there is less friction.
¶According to scientists, friction is caused by the interactions of tiny bumps on surfaces as they rub against each other. The bumps on each surface bend and exert force on each other, making it difficult for the surfaces to slip over each other.
