What is the motion of bouncing ball?
The motion of a bouncing ball obeys projectile motion. Many forces act on a real ball, namely the gravitational force (FG), the drag force due to air resistance (FD), the Magnus force due to the ball’s spin (FM), and the buoyant force (FB).
What makes a tennis ball bounce?
This bounce is caused by air that’s pumped into the ball. As the air pushes against the inside of the ball it creates pressure. When the ball hits the ground the air trapped inside the ball is forced inwards. When the air on the inside pushes back the ball is propelled back off the ground, thus creating the bounce.
What sound does a ball bouncing make?
Thump
A basketball bounced on a stiff surface produces a characteristic loud thump, followed by high-pitched ringing.
Is a tennis ball bouncing simple harmonic motion?
A bouncing ball is not an example of SHM because the force exerted is not linearly proportional to the path of the ball (does not follow Hooke’s Law; Fs = -kx). The force on a bouncing ball does not increase as the distance increases, it stays constant.
Can a tennis ball bounce?
As a tennis ball gains kinetic energy, it transforms shape from oval to round. With the transformation, the molecules cause the tennis ball to bounce up. And the ball bounces because it must transform itself back into the round shape.
Should tennis balls bounce?
According to the ITF rules a “valid” tennis ball should bounce to between 135 cm and 147 cm when dropped on a concrete floor from a height of 254 cm (53-57 in from 100 in). This means that the ball should reach between 53% and 57% of the drop height when bouncing.
What factors affect bounce of ball?
The combination of the material properties of a ball (surface textures, actual materials, amount of air, hardness/ softness, and so on) affects the height of its bounce.
Why bouncing ball is not SHM?
Why bouncing ball is not simple harmonic motion?
A bouncing basketball can not have harmonic motion – either damped or undamped. In order to create harmonic motion, a force has to depend on something’s position. This is the same no matter where the object is so it can’t be harmonic motion.
How tall does a tennis ball have to be to pass the bounce test?
Note that a approved tennis ball should have a certain bounce. To test if a ball still is OK, you can drop it from a height of 100 inches ( 254 cm) onto concrete. It should bounce between: Min. Bounce. Max. Bounce: Note: Numbers above are based on bounce test at sea-level, temperature 68F/20C, relative humidity of 60 %.
What are the forces that cause a tennis ball to bounce?
A ball, when interacting with a court surface by bouncing, has three forces acting on it: a normal force (perpendicular to the surface), a friction force (parallel to the surface), and the force of gravity.
How big is a tennis ball in inches?
Tennis Ball Size (Ball dimensions/measurements) 1 2.57” (6.54 cm) 2 8.07” (20.55 cm) 3 1.98 oz (56 g) 4 2.1 oz (59.4 g) Tennis Ball Bounce – Test self! A tennis ball will start to lose its bounce as soon as the tennis ball can is opened.
Why do tennis players have to increase their racket speed?
The mathematics of a court’s speed is investigated to see how much slow courts tend to reduce the speed of the game. It is found that players must increase their racket head speed by 25% if they wish to compensate for the extra loss of ball speed on slow courts.