Wheel having a diameter of 40 m is fitted with a cage and platform on which a man of mass m stands.
A ball is being rotated in a rough floor find.
A g g.
So does the friction of the surface on which the ball lands.
So what is elasticity.
A 40 n crate rests on a rough horizontal floor.
Objects that are more stretchy are usually more elastic too.
It s an object s ability to return to its original shape after being stretched or squeezed.
Then have your lab partner measure the time t 20 1 it takes for the ball to complete 20 revolutions.
Repeat taking measurements until you get a pair of times that differ by.
A ball s ability to bounce has a lot to do with its elasticity.
F or most men getting kicked in the testicles is one of the worst things that could happen to them.
What makes a ball bouncy.
Or using the definition of work.
What can you say about the work done by friction.
Mass and elasticity affect how high the ball will bounce and how far it will travel.
C a projectile falls toward the surface of earth.
B a physics student stretches a spring.
A box is being pulled across a rough floor at a constant speed.
Friction does negative work.
Interchange roles of whirler and timer and repeat the measurement to obtain time t 20 2.
Frictions acts in the opposite direction to the displacement so the work is negative.
W f d cos since cos 180 then w 0.
Have you ever wondered why some balls bounce higher than others.
A a ball rolls down an inclined plane.
Don t just slide try to get your hips square to the ball by the time your left arm reaches parallel to the ground above right.
E a child pulls a wagon across a rough surface causing it to accelerate.
A 12 n horizontal force is then applied to it.
Even a hard rubber ball won t bounce if you drop it onto the dry part of a sandy beach.
D a box is pulled across a rough floor at constant velocity.
Almost everybody at some point in their lives has bounced a rubber ball against the wall or floor and observed its motion.
Ensure that the ball is rotating in a horizontal circle before measuring the time.
Not all balls are equal.
These principles will be discussed.
A concrete block is pulled 7 0 m across a.
The wheel is rotated in a vertical plane at suck a speed that the force exerted by the man on the platform is equal to this weight when the cage.
This lesson compares the bouncing of a bocce ball a tennis ball and a golf ball.
For a growing number of men however the erotic art of ball busting is a sought out sexual.
Keep the width in your stance too.
For a rough surface at a particular angle there will be more friction than if the same material has a smooth surface i am sure their is an exception to this but that is a special case yet f it seems to be fixed for a particular angle.
