due to this force calculated about the origin is: D. 18 C. 6.0 E. 23 В. 4.2 Q.19: A 2-kg particie has its position in the XY-plane given by: F(1)=[(2t +5)i +(1 - 3t +1)f], where t is in seconds and r is in meters. The magnitude of the angular momenturn (measured in kg.m/s Jof the particie with respect to the origin at t = 1 seci C. 8 A. 2 В. 6 D. 10 E. 12 Q.20: in the adjacent figure, a very light rope is wrapped around a wheel of radius R= 2 m. The wheel can rotate around an axle that is passing through its center end perpendicular to its surface. A block of mass 14 ke is he end of the rone Whon t
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.
Step by step
Solved in 2 steps
