1) 1. The parallelogram law of forces is used to find: a) A. Resultant of two forces b) B. Difference of two forces c) C. Moment of a force d) D. Normal reaction 2) 2. In the parallelogram law, the two forces act: a) A. In opposite directions b) B. At right angles only c) C. At a point with any angle between them d) D. Parallel to each other 3) 3. The diagonal of the parallelogram represents: a) A. One of the component forces b) B. Resultant force c) C. Reaction force d) D. Weight of the body only 4) 4. A force table generally uses: a) A. Metal blocks b) B. Strings and pulleys c) C. Mirrors d) D. Concave lens 5) 5. The forces acting on the ring in a force table are kept in equilibrium by: a) A. Tilting the table b) B. Adjusting the weights on pulleys c) C. Reducing friction d) D. Using magnets 6) 6. The weight of the given body in this experiment is represented by: a) A. Resultant of two known forces b) B. Angle between forces c) C. Diagonal length of the board d) D. String length 7) 7. For the parallelogram to be formed on the force table, the strings must: a) A. Be perpendicular b) B. Be parallel c) C. Represent the directions of acting forces d) D. Be of equal length 8) 8. The condition for equilibrium of the ring is that it: a) A. Rotates continuously b) B. Remains at center with no motion c) C. Moves slightly outward d) D. Vibrates rapidly 9) 9. The resultant force is zero when: a) A. All forces act in the same direction b) B. The ring stays at the center c) C. Forces have unequal magnitudes d) D. Forces act vertically only 10) 10. In parallelogram of forces, the magnitude of resultant depends on: a) A. Angle between the forces b) B. Only the tension in string c) C. Only mass of pulleys d) D. Shape of the table

JKC 11 physics Parallelogram Law of Forces

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