Weight and Mass

Q. A spring balance is used to measure.

1. Mass
2. Weight
3. Force
4. Acceleration

Q.

What is the standard unit of measuring weight?

1. gram

2. Newton

3. meter

4. second

Q.

What are the differences between the mass of an object and its weight?

Q.

Will $1Kg$ sugar weight more at poles or at the equator?

Q.

If one moves from the surface of earth to moon, what will be the effect on its weight?

1. Weight of a person decreases continuously with height from the surface of earth

2. Weight of a person increases with height from the surface of earth

3. Weight of a person first decreases with height and then increases with height from the surface of earth

4. Weight of a person first increases with height and then decreases with height from the surface of earth

Q.

Write two precautions to be observed while using a beam balance.

Q.

When we move towards the north pole from the equator what will happen to our weight?

1. increase.

2. stay same.

3. decrease.

4. become zero.

Q.

The mass of a boy is 40 kg. What is his weight on the surface of the earth and what is his weight on the surface of the moon? Given that g_e = 9.8 ms^-2 and g_m = $\frac{1}{6}$g_e.

Q.

Which of the following is a device that is used to measure mass?

1. All of the above

2. Weighing machine

3. Spring balance

4. Physical balance

Q.

What is the use of a spring balance?

Q. Which of the following devices is used to measure weight?

1. Tachometer
2. Speedometer
3. Odometer
4. Spring balance

Q.

The mass of a body is 25 kg. What would the weight of the body be in:

(i) Kgf and

(ii) Newton

take, $g=10m/s^2$

1. 250 Kgf, 25 N

2. 250 Kgf, 250 N

3. 25 Kgf, 250 N

4. 25 Kgf, 25 N

Q. A physical balance can be used to measure both mass and weight of an object. Is this statement true?

Q.

The weight of an object is the same as its mass but expressed in different units.

1. True
2. False

Q.

If the mass of a body is 5kg, its weight on the surface of the earth would be ___ N. (g = 9.8 $m/s^2$)

Q.

An object has a mass of 50 kg. What would be its weight?

[Take acceleration due to gravity $g=10\frac{m}{s^2}$]

1. 600 N

2. 500 N

3. 700 N

4. 800 N

Q.

A bar of metal has a mass of 200 g and has a certain weight at the poles. Mass remains the same but weight decreases when weighed at the equator. Why?

Q.

Weight of a body is a constant quantity.

1. True
2. False

Q. The earth attracts a body of mass $1kg$ with a force of $10N$. The mass of a boy is $50kg$. His weight will be

1. $5N$
2. $50kg$
3. $500N$
4. $50N$

Q.

What is a simple pendulum?

Q. What is acceleration?

Q.

A Eureka can is used to measure the mass of a substance.

1. True
2. False

Q.

Where will a person weigh more in Ooty or in Delhi?

Q. If we carry a box of jewellery to the top of a mountain, the weight of jewellery box will

1. will first decrease and then increase
2. increase
3. remain constant
4. decrease

Q.

How do you determine the pendulums period of time?

Q.

State the following statement is true or false. If false write the correct statement "The acceleration due to gravity acting on a falling body is directly proportional to the mass of the body.

Q.

Give the relation between the mass and the weight of a body.

Q.

Which option is correct about 'weight'?

1. 2%
2. 4%
3. 7%
4. 10%

Q.

If the radius of the earth were to shrink by one percent, its mass remaining the same, the acceleration due to gravity on the earths surface would

Q.

The SI unit of acceleration is________.

1. km/hr²

2. m/hr²

3. m/s²

4. km/s²