A 20-N horizontal force pushes an object along a rough floor so that the object moves with a constant velocity of 4.0 m/s. How much power does this force deliver to the object?
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.
Given: The value of the horizontal force is 20 N.
The velocity of the object is 4.0 m/s.
To determine: The power force deliver to the object.
The power is defined as the rate of doing work.
The power is equal to the product of force and velocity.
The formula to calculate the power is
where P is the power, F is the force and v is the velocity.
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