Simple harmonic motion
Simple harmonic motion is a type of periodic motion in which an object undergoes oscillatory motion. The restoring force exerted by the object exhibiting SHM is proportional to the displacement from the equilibrium position. The force is directed towards the mean position. We see many examples of SHM around us, common ones are the motion of a pendulum, spring and vibration of strings in musical instruments, and so on.
Simple Pendulum
A simple pendulum comprises a heavy mass (called bob) attached to one end of the weightless and flexible string.
Oscillation
In Physics, oscillation means a repetitive motion that happens in a variation with respect to time. There is usually a central value, where the object would be at rest. Additionally, there are two or more positions between which the repetitive motion takes place. In mathematics, oscillations can also be described as vibrations. The most common examples of oscillation that is seen in daily lives include the alternating current (AC) or the motion of a moving pendulum.
1. What would be the period of the pendulum if it is on the moon, where the acceleration due to gravity is one-sixth that on earth?
2. An airplane performs a loop-the-loop maintaining a constant speed of 180 mi/hr. (a.) What is the maximum radius of the loop? (b.) If the pilot weighs 150 lb, what will his apparent weight be at the bottom of the loop?
3. According to Rutherford and Bohr, what kind of force is necessary to keep atomic electrons in orbit and what provides this force?
4.Why is it more difficult to charge an object by rubbing on a humid day than on a dry day?
5. A battery having a voltage of 3.00 V is connected through a rheostat to a uniform wire 100 cm long. The wire has a resistance of the rheostat be in order that the voltage per millimeter of the wire shall be exactly 1 mV?
6. The sides of a right triangle are BC=3, AC=4, and AB=5 cm. if +10 statC charges are placed at the corners B and C, what is the magnitude and direction of the electric intensity at A?
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