#4

How simple machines utilize mechanical advantage to transfer energy?

Rube Goldberg

Are you tired of carrying box every where. walk from your house to your car and then getting tired and dropping them. well we have the thing for you. You can use simple machines to make a more difficult task(s) into a more simpler one.
With these simple machines you can use the wheel and axel to make a cart to place the boxes in. Then the incline plane or a wedge to then push it into the pulley, after that to pull it into the car, and then to use a skew to hold in down and to keep it in place.
So listen to your muscles and use the simple and affordable simple machine. It has simple writen all over it.

#3

Problem: How does the same ball accelerate down different angled ramps


Hypothesis: The steeper ramps will cause the ball to accelerate more than the less steep ones because in my experience of testing gravity the bigger the angle the farther it will go.

Materials: rubber ball, 75 centimeters long inclined plane, 2 timers, calculator or pencil and paper =)


Cv: Toy car, ramp, protractor, way car is released down ramp, friction of ramp.
Iv: angle of ramp
Dv: Rate of acceleration and the speed of the toy car.


Procedure:
Gather materials
Place mark 10 cm from the end of the ramp
Place ramp at a 25 degree angle
Place ball at the top of the ramp
Release the ball (without pushing it) as your partner starts the first timer
When the ball reaches the 10 cm mark start timer 2
When ball reaches bottom stop both timers
Record total time and 10 cm time
Repeat steps 3-9 two more times
Repeat steps 3-9 three more times with 35 degree angle
Repeat steps 2-9 three more times with 45 degree angle
Use the formula
Acceleration = (final velocity - initial velocity)/time
To find the acceleration of each trial
Use the formula
Distance/ time= speed
To find the speed of each trial
Clean up

My hypothesis was correct on that the heaviest ball won. The ball did go faster the higher angle the ramp was. balls like everything else are effected by gravity therefore they get pulled to the heaviest object around. When the ramp was at the lower angles gravity couldn't make the ball go as fast because of the ramp holding it up. When the ramp was at the steeper angle gravity was pulling on the ball the same way but with less to stop the car from falling.

#2

Problem: What impact doesth surface have on how fast different sized balls can travel?

I think that the small ball on the smoth lane, will go farther than the bigger ball, because fiction and gravity will have more effect on it.

CV:the force of the push, the angle of the ramp
IV:The leagth the balls travels down the slope
DV:The surface of the ramp, the balls

materials-
2 differnt weighted balls
A lego ramp
flat legos
tape measure
marker

procedure-
Gather Materials
Grab the bumpy ramp and mark where you are set the ball up each time.
garb the heavy ball and put it on the ramp
give it a little push
measure how far it went
record data
do this 3 times
now the same thing but do it with the lighter ball
now do that again but put flat bricks to cover the bumpy spots.
finish data
cleanup

#1

Problem: how does the law of inertia affect the physical world
Hypothesis: the bigger ball will go farther then the small ball,because the bigger ball has more mass than the small ball, so it will have more speed going down the ramp.
Cv: hit of force on ball, surface, inclined plane, and the angle and distance of inclined plane
Iv: Size of ball getting hit
Dv: Distance the hit ball goes
Materials: ruler, inclined plane, marker, A small and light ball, and A big ball that has some weight
Procedure:
Gather Materials
Place one end of the inclined plane on a flat smooth surface and raise the other end up ten centimeters
Place the marker or dot on the incline plane to show where the ball has to go.
Place one of the balls on the smooth flat surface at the dot or marker of the ramp so that it is always equal
Position the ruler so that the 0 is lined at the side
Record the distance that the bottom car rolled
Repeat steps 2-3 more times
Repeat steps for the other ball
Record new results
Clean up.

Observations:When the greater mass and bigger ball hit it went farther than the smaller, because of the ball's mass was greater.

Conclusion: The balls rolled different distances because the lighter ball didn't have as much force as the greater mass ball. This is proof that Newtons First Law is true since the balls had to have a different amount of force to move the same ball different distances. The large ball moved the ball the farthest because it had the most force and the lesser mass ball moved the car less because it did not have as much force. Some probles I had were that the ball did not go straight all the time so I used the tape measure that could curve and measure it that way.

Science

Experiment and explain How do newtonslaws of motion apply to the physical world.

It applies to the real world through a lot of things like cars, toys, people, and almost anything that is made of matter. So if a person is standing still and another guy comes and pushes you that's an unbalance and the person standing still is going to fall over. Many toys need an unbalanced force to get it to work like a bouncy ball it needs an unbalanced force to make it bounce. A car uses the power of the engine to make it go farward. A object at rest will stay at rest until gravite or an unbalansed comes and moves it.
The surface of the legos are bumpy which is more friction that the ball has to go down which makes the balln become more slow and might stop the ball in motion and the ball is going to take longer time to trave down the slope or gape to get where it has to go. But with the flat rapes and legos we can make the ball go farther and still have low to none Energy forcing the ball. It well slow down the ball but it well keep moving with all the flat legos. The gravitational pull well make the ball continue going down the ramp with the flat panals the ball will go super far.

Walking Tacos

Walking taco Walks to much, talking tacos talk to much, but the normal taco just sits there doing nothing. No talking, walking, singing, danceing, and running no it just sits there doing nothing. Welcome to the upgraded Taco the walking taco!!!