Oracle IAS, the best coaching institute for UPSC/IAS/PCS preparation in Dehradun brings to you UKPCS Science (paper #6).
NEWTON’S LAWS OF MOTION
Newton’s first law of motion states that an object at rest remains at rest and an object in motion remains in motion with the same velocity unless acted upon by what we call an unbalanced force.
Newton’s first law of motion is also referred to as the law of inertia. Inertia is simply the resistance to change in motion. In short, objects tend to keep doing what they are already doing.
Example:1) a car moving on a road with a constant velocity. If the driver removes is foot from the pedal the velocity starts decreasing. This is due to the friction force (unbalanced force=friction)
2) Have you ever experienced a dizzy feeling after coming to a stop in a descending elevator? Better hold on to the railing! Our body and all its contents move down along with the elevator. Once the elevator comes to a sudden stop, the floor of the elevator applies an external force to our body, causing it to come to a stop as well.
Newton’s second law of motion provides the explanation for the behavior of objects when forces are applied. The law states that external forces cause objects to accelerate, and the amount of acceleration is directly proportional to the net force acting on the objects and inversely proportional to the mass of the objects.
EXAMPLE: The same thing can be applied to any moving object. Say you have a friend who is several pounds smaller than you, but they walk exerting the same amount of force as you. Your friend will go a good deal faster than you because their acceleration would undoubtedly be higher.
One of the main reasons why people constantly try to reduce the mass of objects is to be able to increase its speed and acceleration
Newton’s third law states that for every action, there is an equal and opposite reaction.
EXAMPLE :
1)Let’s consider a man attempting to lift a really heavy weight. If the man is able to pull up with a force of 100 lbs, then the weights in turn will pull down with a force of 100 lbs.
2) rocket propulsion
Printed notes topic wise – Contact us
Cost- Rs.5000/- (including shipping)
(~2500+ pages)
UKPCS Mains Study Material subject wise
The notes are strictly as per UKPCS syllabus (topic wise):
Individual Polity Cost: Rs. 1500/- (including shipping)
Individual S&T Cost: Rs. 1500/- (including shipping)
Individual Geography Cost: Rs. 1500/- (including shipping)
Individual Economics Cost: Rs. 1000/- (including shipping)
Individual Ethics Cost: Rs. 1000/- (including shipping)
Individual History Cost: Rs. 1500/- (including shipping)
Contact us for:-
-
-
-
- Upper Mains UKPCS Classroom program
- UKPCS Upper Test Series
- UKPCS Lower Test Series
- UKPCS Lower Classes
- UKPCS Past year papers
- Phone Number:–9997453844
- Telegram channel : click here
-
-
He is a bibliophile,accomplished writer and a fitness enthusiast.
- CSAT for UKPCS Prelims 2025 || Oracle IAS - December 5, 2024
- UKPCS Mains 2024 Current Affairs PDFs - December 4, 2024
- Prepare for Lower PCS Uttarakhand Exam 2025 with Oracle IAS - September 23, 2024