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The bob of a pendulum was released from a horizontal position. The length of the pendulum is 10m. If it dissipates 10% of its initial energy
against air resistance, the speed with which the bob arrives at the lowest point is : [Use, g : 10 ms–2]
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Frequently Asked Questions
How to prepare for IIT-JEE Physics?
To prepare for IIT-JEE Physics, focus on understanding concepts rather than memorizing formulas. Practice solving a variety of problems, especially previous years’ questions. Create a study schedule that covers all topics, with extra time for challenging areas like Mechanics and Electromagnetism. Regular revision and mock tests are essential for success.
How do you solve projectile motion problems?
To solve projectile motion problems, break the motion into horizontal and vertical components. The horizontal motion has constant velocity (ax = 0), while the vertical motion has constant acceleration due to gravity (ay = g). Use the equations of motion separately for each component, and remember that the time is the same for both components.
How to effectively solve physics numerical problems?
To solve physics numerical problems effectively, first understand the concept thoroughly. Then follow these steps: 1) Read the problem carefully and identify the given quantities and what needs to be found. 2) Draw a diagram if applicable. 3) Write down the relevant formulas. 4) Substitute the values with proper units. 5) Solve step by step. 6) Verify your answer by checking units and whether the result makes physical sense.