Constants Two blocks, of masses m1 and m2, are connected to each other and to a central post by cords as shown in the figure(Figure 1). They rotate about the post at a frequency f (revolutions per second) on a frictionless horizontal surface at distances rj and r2 from the post. Part A Derive an algebraic expression for the tension in the segment of the cord from the post to the block of mass mj. Express your answer in terms of some or all of the variables m1, m2, f,r1, and r2. ? Fr1 = Submit Request Answer Figure 1 of 1 Part B Derive an algebraic expression for the tension in the segment of the cord from the block of mass mi to the block of mass m2. Express your answer in terms of some or all of the variables m1, m2, f,r1, and r2. m2
Angular Momentum
The momentum of an object is given by multiplying its mass and velocity. Momentum is a property of any object that moves with mass. The only difference between angular momentum and linear momentum is that angular momentum deals with moving or spinning objects. A moving particle's linear momentum can be thought of as a measure of its linear motion. The force is proportional to the rate of change of linear momentum. Angular momentum is always directly proportional to mass. In rotational motion, the concept of angular momentum is often used. Since it is a conserved quantity—the total angular momentum of a closed system remains constant—it is a significant quantity in physics. To understand the concept of angular momentum first we need to understand a rigid body and its movement, a position vector that is used to specify the position of particles in space. A rigid body possesses motion it may be linear or rotational. Rotational motion plays important role in angular momentum.
Moment of a Force
The idea of moments is an important concept in physics. It arises from the fact that distance often plays an important part in the interaction of, or in determining the impact of forces on bodies. Moments are often described by their order [first, second, or higher order] based on the power to which the distance has to be raised to understand the phenomenon. Of particular note are the second-order moment of mass (Moment of Inertia) and moments of force.
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