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Question1
A simple pendulum consists of an object suspended by a string. The object is supposed to be a particle. The string with its top end fixed, has a negligible mass and do not stretch. In the nonappearance of air friction, system oscillates by swinging back and forth in vertical plane. If spring is two meters long and makes an initial angle of 30(degree) with the vertical, compute the speed of particle -
a) At lowest points in its trajectory and
b) When angle is 15(degree).
Question2
A car of mass accelerates from speed to speed while going up a slope that makes an angle with the horizontal. The coefficient of static friction is, and the acceleration because of gravity is. Find out the total work done on the car by the outside forces.
A sphere completely submerged in water is tethered to the bottom by a string. The tension in the string is 1/5 (aka one-fith) the weight of the sphere. What is the density of the sphere
You drape a string over a pulley and hang a mass of 35kg from one end. You tie the other end to a point a distance L from the pulley so that the string is horizontal between this point and the pulley.
Water undergoes viscous flow through two pipes with the same pressure difference between the ends. what is the flow rate through pipe 2
To see that it is easy to break a thighbone when falling in this fashion, find out the greatest distance through which his center of gravity can fall without his breaking a bone.
Two isotopes of a certain element have binding energies that differ by 4.9060 MeV. Find the difference in atomic mass between the two isotopes
Suppose a 5.40 m diameter telescope were constructed on the Moon, what minimum separation between two objects
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A certain current on passing through a galvanometer produces a deflection of 100 divisions. The galvanometer resistance would be
A nut is held in the jaws of a pair of pliers. The nut is 25 mm from the pivot of the pliers and a force of 10 N is applied to each handle 150 mm from the pivot
An electron moves in the positive x-direction a distance of 2.31 m in 2.85·10-8 s, bounces off a moving proton, What is the average speed of the electron
A bullet is fired from ground level with a speed of 150 m/s at an angle of 30 degrees above the horizontal. What is the velocity of the bullet while it is at the highest point of its trajectory.
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