Inertia

Q.

Define inertia and its type with example.

Q. The natural tendency of an object to resist a change in their state of rest or uniform motion is called __.

1. Inertia
2. Force
3. Impulse
4. Momentum

Q. A block weighs W is held against a vertical wall by applying a horizontal force F. The minimum value of F needed to hold the block where it is

1. Less than W
2. Equal to W
3. Greater than W
4. Data is insufficient

Q.

It is easy to push an empty box than the same box full of books, because _____.

1. empty box and box full of books have same inertia

2. empty box has more inertia

3. box full of books have less inertia

4. empty box has less inertia

Q.

Describe a simple experiment to demonstrate the inertia of rest.

Q.

State the condition when a body is in (i) static, (ii) dynamic, equilibrium. Give one example each of static and dynamic equilibrium.

Q.

An athlete can take a longer jump if he comes running from a distance. Identify the type of inertia.

1. Inertia of direction

2. Inertia of position

3. Inertia of rest

4. Inertia of motion

Q.

State the condition when a body is in (i) static, (ii) dynamic, equilibrium. Give one example each of static and dynamic equilibrium.

Q.

Give reason:- luggage placed on the roof of a car or bus is tied with rope.

Q. Suppose two bodies of mass 2 kg and 10 kg are placed on a frictionless surface. The force required to move either of them is same. Does that mean both bodies have same inertia? Give reasons.

Q. A water tanker filled up to two-thirds of its height is moving with a uniform speed. On sudden application of brake, the water in the tank will _____.

1. move backward
2. remain unaffected
3. move forward
4. rise up

Q.

Study the following scenarios and identify what type of inertia tends to resist the change.

1. When the bus suddenly starts, the passenger on the bus tends to fall backwards.

2. When a passenger jumps out of moving bus, he falls down.

3. A cyclist riding on a level road does not come to rest immediately even he stops pedalling.

1. All are due to the inertia of rest.

2. Only 1 and 3 are due to the inertia of rest and 2 is due to the inertia of motion.

3. Only 1 is due to the inertia of rest and others are due to the inertia of motion.

4. Only 1 is due to the inertia of motion and others are due to the inertia of rest.

Q.

Do all bodies have same inertia?

1. Yes

2. No

Q.

Study the following scenarios and identify what type of inertia tends to resist the change:

1. When the bus suddenly starts, the passenger on the bus tends to fall backwards.

2. When a passenger jumps out of moving the bus, he falls down.

3. A cyclist in a leveller road does not come to rest immediately even he stops pedalling.

1. Only 1 is due to the inertia of motion and others are due to the inertia of rest.

2. Only 1 is due to the inertia of rest and others are due to the inertia of motion.

3. Only 1 is due to the inertia of rest and 2^nd is due to the inertia of motion.

4. All are due to the inertia of rest.