Tarzan's best monkey friend, JoJo, hurt his hand awhile ago. He was swinging around the jungle and his hand got tangled in some vines. He has been resting it for awhile and has had to walk around the jungle instead of swinging through the jungle. Tarzan advised him that his hand should be healed by now and that he should start exercising it slowly before he tries swinging around on vines. JoJo has been squeezing his favorite rubber ball with his injured hand in order to build up its strength. Tarzan has been keeping track of his progress, but living in the jungle, rain has smudged his data table. Help Tarzan complete his data table using what you know about the behavior of balls that act like springs and the restoring force. Calculate what each smudge on the table should be. smudge A _____N/m smudge B_____N smudge C_____N smudge D_____cm
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.
Tarzan's best monkey friend, JoJo, hurt his hand awhile ago. He was swinging around the jungle and his hand got tangled in some vines. He has been resting it for awhile and has had to walk around the jungle instead of swinging through the jungle. Tarzan advised him that his hand should be healed by now and that he should start exercising it slowly before he tries swinging around on vines. JoJo has been squeezing his favorite rubber ball with his injured hand in order to build up its strength. Tarzan has been keeping track of his progress, but living in the jungle, rain has smudged his data table. Help Tarzan complete his data table using what you know about the behavior of balls that act like springs and the restoring force.
Calculate what each smudge on the table should be.
smudge A _____N/m
smudge B_____N
smudge C_____N
smudge D_____cm
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