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Answer: The force resulting due to the action of muscles is called muscular force. Muscular force is called contact force because it comes in action on when two bodies come in contact of each other. The force which always acts on all the moving objects and whose direction is always opposite to the direction of motion is called force of friction.
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Solution: Pressure is defined as force per unit area or P = F / A P = (800 N) / (2.0 m2 ) P = 400 N / m2 = 400 Pa Example 4: The pressure of a gas contained in a cylinder with a movable piston is 300 Pa. The area of the piston is 0.5 m 2. Calculate the force that is exerted on the piston. Solution
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Class 8 Science Notes Chapter 11 Force and Pressure Meaning of force. Force can be defined as a push or pull on an object. Both non-loving and living things can exert a force. A force can be defined as a push or pull upon an object resulting from the object interaction with another object.
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CONCISE Physics - Middle School - 8 | Force and Pressure | NumericalsGrade 8 | Book a FREE trial class with Lido today - https://bit.ly/LidoClasses Read the.
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Solution Average weight of the elephant = 4000 N Weight of one leg = Force exerted by one leg = 4000/4 = 1000 N Area of the sole of one foot = 0.1 m2 Pressure = Force/Area = 1000/0.1 = 10000 N/m2 = 104 Nm-2 Pressure exerted by one leg of the elephant is 10,000 newton on one square metre. 1.
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Short answer type of questions/HOTS: Question 1. Calculate the pressure if 300N force is exerted on the box and the area of contact is 100 cm 2. Question 2. If 200N force exerted on the top of the box and area of contact is 5 m 2. Calculate the pressure. Question 3.
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1. Pull situations a) In order to open a drawer, we have to pull it. This action changes the state of motion of the drawer. b) To draw water from the well, the rope is pulled. This action changes the state of motion of the bucket. 2. Push Situations a) A football is pushed by the foot of a player.
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PRESSURE - Part 2 (Numericals) | PDF | Pressure | Force PRESSURE - Part 2 ( Numericals) - Read online for free. CBSE class 8 -PRESSURE - Part 2 ( Numericals)
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1. Problem: A book weighs 500 grams. Calculate the force exerted by the book due to gravity if the acceleration due to gravity is 9.8 m/s². Solution: Weight (Force) = Mass × Acceleration due to gravity Weight = 0.5 kg × 9.8 m/s² = 4.9 N So, the force exerted by the book is 4.9 Newtons. 2. Problem: A box has a mass of 10 kg.
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723 35K views 2 years ago #forceandpressure Force and Pressure Numericals Class 8 | Science class 8 Chapter Force and Pressure Questions In this video we discussed the various.
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This is the reason Vedantu has designed the worksheets of CBSE Class 8 Science Force and Pressure Worksheets with Answers for Chapter 11 in PDF format in such an easy and simple pattern that it becomes an interesting and fun-loving activity for the student.
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The NCERT Exemplar for Class 8 Science Chapter 11 Force and Pressure explains the topics mentioned in CBSE Class 8 Chapter 11. By studying this Exemplar thoroughly, students are able to strengthen their exam preparation.. Practising Exemplar will help you solve different kinds of questions and numericals, which are important from the.
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Class 8 (ICSE), Physics (Viva), Chapter - 3 (Force and Pressure), Numericals Questions Solved in the Video :- 1. A wooden box of weight 140 N is kept on a table. The area of cross-section.
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Understand the concept of Numericals on Force and Pressure with CBSE Class 8 course curated by Abhay Kumar Jaiswal on Unacademy. The Science course is delivered in Hinglish.. Numericals on Force and Pressure. Abhay Kumar Jaiswal. 459 followers • Science. Watch now Download Class PDF. Sep 30, 2023 • 1h 21m • 46 views.
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Answer True and false Friction opposes the relative motion between two surfaces in contact. A force can act on an object with or without being in contact with it. Gases does not exert pressure on the walls of their container The force exerted by a charged body on another charged or uncharged body is known as gravitational force
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Solution: Given: Area = 0.25 m 2, weight of the box = 50 N, Pressure = ? Pressure =force/area = 50 N/0.25 m 2 = 200 N/ m 2 Example 2. The area of the tip of a screw is 0.5 mm 2 and its weight is 0.5 N. Calculate the pressure (in Pa) exerted by the screw on a wooden plank. Solution: Given: Area = 0.5 x10 -6 m 2
