Chapter 4- Numerical (4.1 to 4.5) Solution in Urdu | Physics class 9 | Basic Physics | Class 9th

In today lecture, we are going to solve the numerical problems of chapter 4 (Turning Effect of Forces) of 9th class physics. This is the 1st part of chapter -4 numerical in which we will solve first five numerical such as from 4.1 to 4.5 from the exercise. We provide most easy and authentic method to solve these problems. Hope you like it.

Chapter 3 Numericals: (3.1 to 3.5):    • Chapter 3- Numerical (3.1 to 3.5) Solution...  
Chapter 3 Numericals: (3.6 to 3.10):    • Chapter 3- Numerical (3.6 to 3.10) Solutio...  

Chapter 2 Numericals (2.1 to 2.5):    • Chapter 2- Numerical (2.1 to 2.5) Solution...  
Chapter 2 Numericals (2.6 to 2.10):    • Chapter 2- Numerical (2.6 to 2.10) Solutio...  

Chapter 1 Numericals: (1.1 to 1.5) :    • Chapter 1- Numericals (1.1 to 1.5 ) Soluti...  
Chapter 1 Numericals: (1.6 to 1.10) :    • Chapter 1 Numericals ( 1.6 to 1.10 ) Solut...  

4.1: Find the resultant of the following forces:
(i) 10 N along x-axis
(ii) 6 N along y-axis and
(iii) 4 N along negative x-axis.

4.2: Find the perpendicular components of a force of 50 N making an angle of 30° with x axis.

4.3: Find the magnitude and direction of a force, if its x-component is 12 N and y- component is 5 N.

4.4: A force of 100 N is applied perpendicularly on a spanner at a distance of 10 cm from a nut. Find the torque produced by the force.

4.5: A force is acting on a body making an angle of 30° with the horizontal. The horizontal component of the force is 20 N. Find the force.

Topics covers in this video:
Prefixes, units conversion factors, physics, class9thphysics, modernphysics, class9th, physicalquantities chapter3, quantumphysics, quantum, nuclearphysics, mechanics, light, electromagnetism, sound, energy, electronics, basic, units, mechanical, kinematics, rest and motion, types of motion, equations of motion, random motion, linear motion, translational motion, rotatory motion, speed time graph, distance time graph, gravitational acceleration, gravitational constant(g), Newtons laws, momentum, kinetic energy, potential energy, types of energy, law of conservation of momentum, collisions, gun and bullet example, tension in strings, torque, moments, principle of moments, conditions of equilibrium, rectangular components.

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