A diver performs a tuck dive in the sagittal plane that takes 1.43 seconds to complete (time in the air). From standing on the board, the diver jumps off the board and makes two full revolutions before coming out of the tuck position. The diver then has to finish the dive with an additional half rotation to line up for a head first perfectly vertical entry into the pool. a) What was the magnitude of the diver's average angular velocity during the dive in degrees per second.
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.
A diver performs a tuck dive in the sagittal plane that takes 1.43 seconds to complete (time in the air). From standing on the board, the diver jumps off the board and makes two full revolutions before coming out of the tuck position. The diver then has to finish the dive with an additional half rotation to line up for a head first perfectly vertical entry into the pool.
Trending now
This is a popular solution!
Step by step
Solved in 3 steps with 3 images