Physics Class 9 Practical 9 Important Viva Questions with Answers (Force table)
PRACTICAL 9 To determine the resultant of two forces graphically using a Horizontal force table. VIVA VOCE 1. What is the objective of this practical experiment? Ans: The objective is to determine the resultant of two forces graphically using a horizontal force table. 2. Describe the setup of a horizontal force table. Ans: A horizontal force table consists of a circular platform with a center pin. Forces are applied to the platform using strings or ropes attached to pulleys at various angles. 3. How do you represent forces graphically on a force table? Ans: Forces are represented by vectors, where the direction of the vector corresponds to the direction of the force, and the magnitude of the vector represents the magnitude of the force. 4. What is the principle behind determining the resultant of two forces graphically? Ans: According to the parallelogram law of vector addition, the resultant of two forces is represented by the diagonal of the parallelogram formed by the ve