Friction Test

Result

Friction Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

To every action there is always an equal and opposite reaction. Which of the following statements is correct regarding this?

A
The buggy pulls the horse backward just as hard as the horse pulls the buggy forward. Both of them would not move forward if surface is frictionless.

B
The horse pulls the buggy forward slightly harder than the buggy pulls the horse backward, so they move forward.

C
The horse can pull the buggy forward only if the horse weighs more than the buggy.

D
None of these
Question 2
1 / -0

John carried out an experiment to find out how different surfaces (P, Q, R and S) affect the distance a car travelling at 50 km/h needed to stop once the brakes are applied. The results are shown below:

Type of road surfaces P Q R S

Stopping distance(m) 18 15 19 27

Which type of road will provide the most friction for the car to stop?

A
P

B
Q

C
R

D
S

Solution

The road Q provides the maximum friction, I since the stopping distance for surface Q is the lowest.
Question 3
1 / -0

When a bicycle is in motion, the force of friction exerted by the ground on the two wheels is such that it acts

A
In the backward direction on the front wheel and in the forward direction on the rear wheel

B
In the forward direction on the front wheel and in the backward direction on the rear wheel

C
In the forward direction on both front and the rear wheels

D
None of these.

Solution

The rear wheel moves by the force I communicated to it by pedalling while front wheel I moves by itself. So, when pedalling a bicycle, the force exerted by the rear wheel on ground makes the force of friction act on it in the forward direction.
Question 4
1 / -0

Read the given statements and select the correct option.

Statement 1: While drawing a line on a paper, friction force acts on paper in the same direction along which line is drawn on the paper.
Statement 2: Friction always opposes motion.

A
Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

B
Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.

C
Statement 1 is true and statement 2 is false.

D
Both statements 1 and 2 are false.
Question 5
1 / -0

Consider a vehicle going on a horizontal road towards east. Neglect any force due to air. The frictional force on the vehicle by the road

A
Is towards east if the vehicle is accelerating

B
Is zero if the vehicle is moving with a uniform velocity

C
Must be towards east

D
Must be towards west.
Question 6
1 / -0

A box is given a push across the floor. It comes to stop shortly after. Which one of the following reasons explain why this happen?

A
Gravity is acting on the box in the direction opposite to the box's movement.

B
Friction is acting on the box in the same direction of the box's movement.

C
Friction is acting on the box in the direction opposite to the box's movement.

D
The heat produced during the box's movement slows down the box.

Solution

When we push a box across the floor, force of friction comes into play in the direction opposite to the applied force and opposes the motion of the box. Hence, the box comes to stop shortly after.
Question 7
1 / -0

When the applied force is doubled on an object and the object is still at rest, then friction becomes

A
Doubled

B
Halved

C
Quadrupled

D
Zero.

Solution

The force of static friction depends upon the applied force and the nature of the surface in contact. More is the applied

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Type of road surfaces	P	Q	R	S
Stopping distance(m)	18	15	19	27

Friction Test - 2

Result

Friction Test - 2

Score

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Rank

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SHARING IS CARING

Question 1

The buggy pulls the horse backward just as hard as the horse pulls the buggy forward. Both of them would not move forward if surface is frictionless.

The horse pulls the buggy forward slightly harder than the buggy pulls the horse backward, so they move forward.

The horse can pull the buggy forward only if the horse weighs more than the buggy.

None of these

Question 2

P

Q

R

S

Solution

Question 3

In the backward direction on the front wheel and in the forward direction on the rear wheel

In the forward direction on the front wheel and in the backward direction on the rear wheel

In the forward direction on both front and the rear wheels

None of these.

Solution

Question 4

Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

Both statements 1 and 2 are true but statement 2 is not the correct explanation of statement 1.

Statement 1 is true and statement 2 is false.

Both statements 1 and 2 are false.

Question 5

Is towards east if the vehicle is accelerating

Is zero if the vehicle is moving with a uniform velocity

Must be towards east

Must be towards west.

Question 6

Gravity is acting on the box in the direction opposite to the box's movement.

Friction is acting on the box in the same direction of the box's movement.

Friction is acting on the box in the direction opposite to the box's movement.

The heat produced during the box's movement slows down the box.

Solution

Question 7

Doubled

Halved

Quadrupled

Zero.

Solution

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