![]() Table 1: Length of the rope and time taken to complete 10įirstly, even the hook with iron masses is released to oscillate by the For each length, 5 trials are taken and data is.Repeated with 20cm, 30cm, 40cm and 50cm of rope that is hanged from the clamp. By following the same steps, the experiment is.Watch is stopped time on the stop watch is recorded. When the hook completes 10 oscillations, the stop.Oscillation of the hook is started from the ruler and when the oscillation is Of the oscillation, so to standardize the angle of release to omit its effect Ruler is put on the marked point vertically to standardize the starting point Is added on to the hook to make the total mass hanged from the rope as 250g. By using the masses of 10g, 20g, 50g, 230g The help of the ruler, 15cm from the bottom of the stand to right side is In that arrangement, ends are tied on the Pendulous section of the rope is measured and regulated from the top to 10 cm. The ends of the rope are joined together on the clamp. The side of the rope which the rope is fold from is tied inĪ way that the hook can be hanged from it. The aim of this investigation is to find the relation between the length of the pendulum and period of a simple pendulum How does the length of pendulum which is ranged between 10cm and 50cm affect the period of a simple pendulum that is detected by taking time for 10 oscillations and calculating 1 oscillation time? Aim Is hanged from the pendulum, and material of the bob. Time taken to complete 1 oscillation is called as period and itĭepends on some factors which are length of the pendulum, mass of the bob that When the bob comes back to its starting point, it completes one Motion and it occurs as a result of swing a bob of the pendulum the bob goesįorth and back. (b) Calculate the speed (in km/h) for which the airplane will have the maximum $endurance$(that is, remain in the air the longest time).Result of acceleration due to the gravity. (a) Calculate the speed (in km/h) at which this airplane will have the maximum $range$ (that is, travel the greatest distance) for a given quantity of fuel. In steady flight, the engine must provide a forward force that exactly balances the air resistance force. (b) What is the acceleration of the passengers during the collision in part (a), and how large a force is acting to accelerate their heads? Express the acceleration in m/s$^2$ and in $g$'s. ![]() (a) If a car waiting at a stoplight is rear-ended in a collision that lasts for 10.0 ms, what is the greatest speed this car and its driver can reach without breaking neck bones if the driver's head has a mass of 5.0 kg (which is about right for a 70-kg person)? Express your answer in m/s and in mi/h. Experiments have shown that these bones will fracture if they absorb more than 8.0 J of energy. ![]() ![]() But during a very sudden acceleration, the muscles do not react immediately because they are flexible most of the accelerating force is provided by the neck bones. During normal acceleration, the neck muscles play a large role in accelerating the head so that the bones are not injured. When a car is hit from behind, its passengers undergo sudden forward acceleration, which can cause a severe neck injury known as $whiplash$.
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