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he two ends of spring – balance are pulled each by a force of 10kg.wt. What will be the reading of the balance?

he two ends of spring – balance are pulled each by a force of 10kg.wt. What will be the reading of the balance?
 
 

Grade:10

25 Answers

Gaurav Yadav
406 Points
one month ago
Hey student.
 
The reading of the balance will be 10kgwt.
 
This is the answer to your question. Hope it helps you.
Nandini Sharma
25 Points
one month ago
A lift is accelerated upward. Will the apparent weight of a person inside the lift increase, decrease or remain the same relative to its real weight? If the lift is going with uniform speed, then?
Gaurav Yadav
406 Points
one month ago
Hey student.
 
The apparent weight will increase. If the lift is going with uniform speed, then the apparent weight will remain the same as the real weight.
 
This is the answer to your question. Hope this helps you.
Nandini Sharma
25 Points
one month ago

Give the magnitude and direction of the net force acting on

(a) A drop of rain falling down with constant speed.

(b) A kite skillfully held stationary in the sky.

 

Gaurav Yadav
406 Points
one month ago
Hey student.
 

(1) According to first law of motion F = 0 as a = 0 (particle moves with constant speed)

 (2) Since kite is stationary net force on the kite is also zero.

 

This is the answer to your question. Hope this helps you.

 

Nandini Sharma
25 Points
one month ago
A force is being applied on a body but it causes no acceleration. What possibilities may be considered to explain the observation?
 
 
Gaurav Yadav
406 Points
one month ago
Hey student.
 

(1) If the force is deforming force then it does not produce acceleration.

 (2) The force is internal force which cannot cause acceleration.

 

This is the answer to your question. Hope this helps you.

Nandini Sharma
25 Points
one month ago
Write two consequences of Newton’s second law of motion?
 
Please answer this question urgently. Please. Please. Please.
Gaurav Yadav
406 Points
one month ago

Hey student.
 

(1) It shows that the motion is accelerated only when force is applied.

(2) It gives us the concept of inertial mass of a body.

 

This is the answer to your question. Hope this helps you.

Nandini Sharma
25 Points
one month ago
A bird is sitting on the floor of a wire cage and the cage is in the hand of a boy. The bird starts flying in the cage. Will the boy experience any change in the weight of the cage?
 
 
Gaurav Yadav
406 Points
one month ago
Hey student.
 

When the bird starts flying inside the cage the weight of bird is no more experienced as air inside is in free contact with atmospheric air hence the cage will appear lighter.

 
This is the answer to your question. Hope this helps you.
Nandini Sharma
25 Points
one month ago
Why does a cyclist lean to one side, while going along curve? In what direction does he lean?
 
Please answer this question urgently. Please. Please. Please.
Gaurav Yadav
406 Points
one month ago
Hey student.
 

A cyclist leans while going along curve because a component of normal reaction of the ground provides him the centripetal force he requires for turning.

He has to lean inwards from his vertical position i.e. towards the centre of the circular path.

 

This is the answer to your question. Hope this helps you.

Nandini Sharma
25 Points
one month ago
How does banking of roads reduce wear and tear of the tyres?
 
Please answer this question urgently. Please. Please. Please.
Gaurav Yadav
406 Points
one month ago
Hey student.
 
When a curved road is unbanked force of friction between the tyres and the road provides the necessary centripetal force. Friction has to be increased which will cause wear and tear. But when the curved road is banked, a component of normal reaction of the ground provides the necessary centripetal force which reduces the wear and tear of the tyres.
 
This is the answer to your question. Hope this helps you.
Nandini Sharma
25 Points
one month ago
A soda water bottle is falling freely. Will the bubbles of the gas rise in the water of the bottle?
 
Please answer this question urgently. Please. Please. Please.
Gaurav Yadav
406 Points
one month ago
Hey student.
 
bubbles will not rise in water because water in freely falling bottle is in the state of weight – lessens hence no up thrust force acts on the bubbles.
 
This is the answer to your question. Hope this helps you.
Nandini Sharma
25 Points
one month ago
Explain why passengers are thrown forward form their seats when a speeding bus stops suddenly.
 
Please answer this question urgently. Please. Please. Please.
Gaurav Yadav
406 Points
one month ago
Hey student.
 
When the speeding bus stops suddenly, lower part of the body in contact with the seat comes to rest but the upper part of the body of the passengers tends to maintain its uniform motion. Hence the passengers are thrown forward.
 
This is the answer to your question. Hope this helps you.
Nandini Sharma
25 Points
one month ago

How is centripetal force provided in case of the following?

(i) Motion of planet around the sun,

(ii) Motion of moon around the earth.

(iii) Motion of an electron around the nucleus in an atom.

 

Gaurav Yadav
406 Points
one month ago
Hey student.
 

(i) Gravitational force acting on the planet and the sun provides the necessary centripetal force.

(ii) Force of gravity due to earth on the moon provides centripetal force.

(iii) Electrostatic force attraction between the electron and the proton provides  the necessary centripetal force.

 

This is the answer to your question. Hope this helps you.

Nandini Sharma
25 Points
one month ago

Give the magnitude and direction of the net force acting on

(a) a drop of rain falling down with a constant speed,

(b) a cork of mass 10 g floating on water,

(c) a kite skillfully held stationary in the sky,

(d) a car moving with a constant velocity of 30 km/h on a rough road,

(e) a high-speed electron in space far from all material objects, and free of electric and magnetic fields.

 
Gaurav Yadav
406 Points
one month ago
Hey student.
 

(a) Zero net force

The rain drop is falling with a constant speed. Hence, it acceleration is zero. As per Newton's second law of motion, the net force acting on the rain drop is zero.

(b) Zero net force

The weight of the cork is acting downward. It is balanced by the buoyant force exerted by the water in the upward direction. Hence, no net force is acting on the floating cork.

(c) Zero net force

The kite is stationary in the sky, i.e., it is not moving at all. Hence, as per Newton's first law of motion, no net force is acting on the kite.

(d) Zero net force

The car is moving on a rough road with a constant velocity. Hence, its acceleration is zero. As per Newton's second law of motion, no net force is acting on the car.

(e) Zero net force

The high speed electron is free from the influence of all fields. Hence, no net force is acting on the electron.

 

This is the answer to your question. Hope this helps you.

Nandini Sharma
25 Points
one month ago

Explain why

(a) a horse cannot pull a cart and run in empty space,

(b) passengers are thrown forward from their seats when a speeding bus stops suddenly

Gaurav Yadav
406 Points
one month ago
Hey student.
 

(a) In order to pull a cart, a horse pushes the ground backward with some force. The ground  in turn exerts an equal and opposite reaction force upon the feet of the horse. This reaction force causes the horse to move forward.

An empty space is devoid of any such reaction force. Therefore, a horse cannot pull a cart and run in empty space.

(b) When a speeding bus stops suddenly, the lower portion of a passenger's body, which is in contact with the seat, suddenly comes to rest. However, the upper portion tends to remain in motion (as per the first law of motion). As a result, the passenger's upper body is thrown forward in the direction in which the bus was moving.

 

This is the answer to your question. Hope this helps you.

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