Physics Practicals Class 11
Parallelogram Law of Vector Addition
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- Engaging simulations with easy-to-teach instructions
About Simulation
- Through the simulation, you will gain a comprehensive understanding of how to determine the mass of an object by utilizing the parallelogram law of vector addition.
- By engaging with the simulation, you can acquire the skills needed to measure the mass of an object by tracing a parallelogram using a geometric compass and marking equilibrium through the balancing of weights on hangers.
- At the conclusion of the simulation, you will learn the functioning of Grave Sand's apparatus.
- You will also grasp the principles behind the parallelogram law of vector addition.
- Additionally, you will develop the ability to determine the mass of an object, trace a parallelogram using a geometric compass, and calculate the resultant of two forces.
Simulation Details
Description
Grave Sand’s apparatus:
It consists of a wooden board fixed vertically on two wooden pillars. Two pulleys P1 and P2 are provided on its two sides near the upper edge of the board. A thread carrying hangers for addition of slotted weights is made to pass over the pulleys so that two forces P and Q can be applied by adding weights to the hangers. By suspending the given object, whose weight is to be determined, in the middle of the thread, a third force X is applied.
Parallelogram law of vector addition:
The law states that “when two forces act simultaneously at a point and are represented in magnitude and direction by the two adjacent sides of a parallelogram, then the resultant of forces can be represented both in magnitude and direction by the diagonal of the parallelogram passing through the point of application of the two forces.”
Let P and Q be the magnitudes of the two forces and θ the angle between them. Then the resultant R of P and Q is given by,
Requirements for this Science Experiment
- Grave Sand’s apparatus
- White paper
- Drawing pins
- Pencil, string
- Wooden block
- Protractor
- Weight hanger
- Slotted weight
- Scale
- Thin mirror strip
- Geometry compass
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