What is the restoring force of a simple pendulum?

As for the simple pendulum, the restoring force of the physical pendulum is the force of gravity. With the simple pendulum, the force of gravity acts on the center of the pendulum bob. In the case of the physical pendulum, the force of gravity acts on the center of mass (CM) of an object.

How restoring force keeps a pendulum swinging?

A pendulum is a weight suspended from a pivot so that it can swing freely. When a pendulum is displaced sideways from its resting equilibrium position, it is subject to a restoring force; after it reaches its highest point in its swing, gravity will accelerate it back toward the equilibrium position.

How does the restoring force acting on a pendulum bob change?

On a pendulum, the restoring force is at a maximum at the top, so it reaches zero at the bottom of the swing. It changes like a cos curve…. As does the acceleration (since F=ma!). For the velocity, it is at a minimum at the top and at a maximum at the bottom, so it is like a sin curve.

Which force acts as a restoring force?

In a pendulum, the gravitational force acts as the restoring force. When the pendulum is at the maximum displacement position, the force that brings the pendulum back to its equilibrium position is the gravitational force.

What is the unit of restoring force?

F is the restoring force exerted by the spring on that end (in SI units: N or kg·m/s2); and. k is a constant called the rate or spring constant (in SI units: N/m or kg/s2).

What are the laws of a simple pendulum?

The time period of the simple pendulum is directly proportional to the square root of its length. This property is known as the law of length. The time period of a simple pendulum is inversely proportional to the square root of the acceleration due to gravity at that place.

How does a simple pendulum work?

A simple pendulum consists of a mass m hanging from a string of length L and fixed at a pivot point P. When displaced to an initial angle and released, the pendulum will swing back and forth with periodic motion.

Why does a pendulum have periodic motion?

A pendulum consists of a weight suspended on a rod, string or wire. When the weight or bob is moved and let go, the pendulum will swing back and forth in a regular periodic motion. The effect of gravity on the bob results in the periodic motion, and the length of the wire determines the frequency of its swing.

What is the purpose of the simple pendulum experiment?

The goal of this experiment was to determine the effect of mass and length on the period of oscillation of a simple pendulum. Using a photogate to measure the period, we varied the pendulum mass for a fixed length, and varied the pendulum length for a fixed mass.

As for the simple pendulum, the restoring force of the physical pendulum is the force of gravity. With the simple pendulum, the force of gravity acts on the center of the pendulum bob.

What causes a pendulum to oscillate?

Figure 15.21 A physical pendulum is any object that oscillates as a pendulum, but cannot be modeled as a point mass on a string. The force of gravity acts on the center of mass (CM) and provides the restoring force that causes the object to oscillate.

What is the linear displacement of a simple pendulum?

Figure 15.20 A simple pendulum has a small-diameter bob and a string that has a very small mass but is strong enough not to stretch appreciably. The linear displacement from equilibrium is s, the length of the arc. Also shown are the forces on the bob, which result in a net force of

What is the difference between simple pendulum and physical pendulum?

A physical pendulum is any object whose oscillations are similar to those of the simple pendulum, but cannot be modeled as a point mass on a string, and the mass distribution must be included into the equation of motion. As for the simple pendulum, the restoring force of the physical pendulum is the force of gravity.