Khufra works at a spring factory and he was assigned to test a certain spring, whose constant is 50 N/m, attached to a 30-kg block in an incline (0=30°). With the spring initially at equilibrium position, the block was pushed 0.5 meters up the incline by a 50-N external force applied parallel to the path. The coefficient of kinetic friction is 0.50. a) draw clearly the FBD of the block. b) How much is the normal force (in Newtons) on the block? c) How much work is done by the spring (in Joules) on the block? d) How much work is done by the block (in Joules) on the spring? e) How much work is done by the applied pull on the block? f) How much work is done by friction? LAWY
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.
Strength of materials (Solutions only. Rate wIll be given)
Answer only letters D to F
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