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To determine the acceleration due to gravity using a simple pendulum.Apparatus: Pendulum, meter scale, stand, stop watch, vernier callipers.Procedure:1. The diameter of the bob is determined by using vernier callipers and then its radius (r) is calculated.2. Find the length of the pendulum l using a metre scale.3. Draw the bob aside giving a small amplitude and release it4. Then the pendulum starts its oscillation5. Find the time taken for ‘n' complete oscillation using stop watch and divide the time by ‘n' to get the time taken for one oscillation6. Calculate the value of l/T2.7. This experiment is repeated for different values of ‘l' (Say 30, 40, 50, 60, 70 and 80 cm) and find in each case the time period. The results are tabulated each time. and the average value of l/T28. Then the value of ‘g' can be calculated by the formula g = 4πr2( l/T2)
The water will not spill Get a small pail and fill it nearly full with water . Swing it around rapidly at arms' length and the water will not spill because of centrifugal force
Centrifugal force with a tin can lid Punch a hole near the edge of a tin can lid. Attach it to the cord from the drill and view the effects of rotation.
Black-hole dynamic laws; laws of black-hole dynamics first law of black hole dynamics For interactions among black holes & normal matter, the conservation laws of mass-
It explains that when an object is immersed partly or completely in a liquid, it loses in weight similar to the weight of the liquid displaced by it. Let w1 be weight of an obje
A 12V battery is connected in a circuit having three series-connected resistors having resistances of 4 Ω,9 Ω and 11 Ω. Verify the current flowing through and the p.d. acr
Can several fibers gives the same amount of light? No, some fibers do not give similar amount of light. If a no. of fibers or light guides are coupled similar illuminator, this
A capacitor is to be constructed so that its capacitance is 0.2µF and to take a p.d. of 1.25kV across its terminals. The dielectric is to be mica which, after allowing a safet
Postulates of Special Theory of Relativity - 1. All law of physics having same form in all inertial frame of reference. 2. The speed of light in free space is constant, irres
how much time is required to raise the temperature of the water from A family comes home from a long vacation with laundry to-do and showers to take. The water heater has been t
Which of the subsequent is a principal ray for the case of an actual physical object and a convex (converging) lens? Indicate all that apply. Ans: In the thin lens approxi
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