DatR on your finger trrace is displaced and how hard Do a similar set of investi
ID: 1793423 • Letter: D
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DatR on your finger trrace is displaced and how hard Do a similar set of investigations using the same hoops held horizontally with 50-g, then 100-g, and finally 150-g masses placed at the centers of the surfaces. 4. Question 3-4: When the rubber surface has a force applied to its center, does it push back? How do you know? Does the force seem to change as it is pushi harder? Question 3-5: What happens to the center of the rubber s pushed? What happens as it is pushed harder? urface when it i Ouestion 3-6: Did the surface of the stiffer material bend more or less than the more flexible rubber surface when the same force was applied? Explain. Question 3-7: What mechanism do you think might explain the ability of the surfaces to react to an active force by applying a normal force? Question 3-8: Based on your observations with the stiffer surface, what would happen to the bending of the surface if it was made up of hundreds of layers of cloth to resist a person's push or hold up a mass? Question 3-9: Does a table or wall bend noticeably if an active force is applied to it? What mechanism do you propose to explain how walls and tables can ex- ert normal forces? Do you think that the surface bends at all? Explain.Explanation / Answer
3-4 when the rubber surface has a force applied to it, it does push back. we know it because there is no net motion of the blaock on the rubber surface even though the rubber sirface has weight of the block constantly acting on it. it means it is pushing back with equal and opposite force. This force gets stronger as we push the block more as then the block has the tendency to jump back which means the force of the rubber sheet gets dtronger as we apply more force
3-5 the center of the rubber surface moves away from its equilibrium position when it is pushed. the harder it is pusher the farther from its equilibrium position it goes
3-6 surface of stiffer material moves lesser in comparision with the surface of the riubber sheet
3-7 the coloumbs electrostatic force can explain this force which is exerted by surfaces when force is applied to them, as deformity in the shape of the surface results in restoring forceds in the material from coloumbs law and hence the restoring force can be explained
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