NCERT Solutions for Class 11 Physics Chapter 5 - Laws of MotionShare
NCERT Solutions for Class 11 Physics Chapter 5 - Laws of Motion presented here are a perfect source for practicing the important topics of the Chapter properly. By using these Solutions for the exam preparation, you can clear your doubts of the difficult topics and prepare each topic in a thorough manner. Also, these Solutions would help you to get acquainted with the type of questions that can be asked in the Class 11 Physics exam. So, this way it will be easier for you to approach difficult topics and be confident about scoring better marks in the Physics exam.
Our Chapter 5 NCERT Solutions for Class 11 Physics comprise of the answers to the questions given in the textbook along with MCQ’s, extra questions, short answer questions as well as Important questions.
Given below are the topics that we have covered in our NCERT Solutions for Class 11 Physics Chapter – Laws of Motion
- Introduction to basic concepts related to Motion of Objects
- Aristotle’s fallacy
- The law of inertia
- Newton’s first law of motion
- Newton’s second law of motion
- Newton’s third law of motion
- Conservation of momentum
- Equilibrium of a particle
- Common forces in mechanics
- Circular motion and others.
NCERT Solutions for Class 11 Physics Chapter 5 - Laws of Motion
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 skill fully 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.
A pebble of mass 0.05 kg is thrown vertically upwards. Give the direction and magnitude of the net force on the pebble,
A. during its upward motion
B. during its downward motion
C. at the highest point where it is momentarily at rest. Do your answers change if the pebble was thrown at an angle of 45° with the horizontal direction?
Ignore air resistance.
Give the magnitude and direction of the net force acting on a stone of mass 0.1 kg,
A. just after it is dropped from the window of a stationary train,
B. just after it is dropped from the window of a train running at a constant velocity of 36 km/h,
C. just after it is dropped from the window of a train accelerating with 1 m s-2,
D. lying on the floor of a train which is accelerating with 1 m s-2, the stone being at rest relative to the train.
Neglect air resistance throughout.
One end of a string of length l is connected to a particle of mass m and the other to a small peg on a smooth horizontal table. If the particle moves in a circle with speed v the net force on the particle (directed towards the centre) is:
T is the tension in the string. [Choose the correct alternative].
The driver of a three-wheeler moving with a speed of 36 km/h sees a child standing in the middle of the road and brings his vehicle to rest in 4.0 s just in time to save the child. What is the average retarding force on the vehicle? The mass of the three-wheeler is 400 kg and the mass of the driver is 65 kg.
A body of mass 0.40 kg moving initially with a constant speed of 10 m s-1 to the north is subject to a constant force of 8.0 N directed towards the south for 30 s. Take the instant the force is applied to be t = 0, the position of the body at that time to be x = 0, and predict its position at t = –5 s, 25 s, 100 s.
|Chapter 1 - Physical World|
|Chapter 2 - Units and Measurements|
|Chapter 3 - Motion in a Straight Line|
|Chapter 4 - Motion in a Plane|
|Chapter 5 - Laws of Motion|
|Chapter 6 - Work, Energy and Power|
|Chapter 7 - System of Particles and Rotational Motion|
|Chapter 8 - Gravitation|