1 Which variable expression is correctly paired with its corresponding unit? mass distance (1) and watt time mass distance (2) and watt time mass distance (3) time and joule mass distance (4) and joule time 2 What is an essential characteristic of an object in equilibrium? (1) zero velocity (2) zero acceleration (3) zero pctential energy (4) zero kinetic energy 3 Anet force with a magnitude of 5.0 newtons moves a 2.0-kilogram object a distance of 3.0 meters in 3.0 seconds. What is the total work done on the object? (1) 1.0J (2) 10. J (3) 15 J (4) 30. J 4 A force is applied to a block causing it to accelerate along a horizontal, frictionless surface. The energy gained by the block is equal to the (1) work done on the block (2) power applied to the block (3) impulse applied to the block (4) momentum given to the block 5 A 2.2-kilogram mass is pulled by a horizontal 30.-newton force to the right through a distance of 5.0 meters as shown in the diagram below. 30. N 2.2 kg 5.0 m What is the total amount of work done on the mass? (1) 11 J (2) 66 J (3) 150J (4) 330 J
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.
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