1. What is the speed of the boulder just as it reaches the bottom of the hill? 2. Since the boulder rolled without slipping there should be static friction acting on the boulder from the hill. What was the magnitude of the friction force on the boulder?
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.
A spherical boulder rolls down a hill without slipping. The radius of the boulder is 1 meter, the mass of the boulder is 250 kg. The boulder started from rest and rolls 125 meters down the surface of the hill which has a constant slope of 15 degrees.
1. What is the speed of the boulder just as it reaches the bottom of the hill?
2. Since the boulder rolled without slipping there should be static friction acting on the boulder from the hill. What was the magnitude of the friction force on the boulder?
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