a pulley car works by attaching a motor and a battery to a
wooden base with an axle and wheels.the motor is controlled by the
batterys power and is useally controling the wheels by using rope,a
rubber band or possibly a hair band.
If a graph shows time on the horizontal axis and speed on the vertical axis a straight horizontal line across the graph would indicate
You set up a pulley to help you lift something you anchor the rope at one end and arrange a moveable pulley to achieve a mechanical advantage of 2 by the time you have lifted the object 5m off the gro
With regard to the object-lifting examples traced in lesson3 the ima is equal to the distance divided by the distance
What is the effect of using an inclined plane to lift an object
A hammer is used to pull a nail from a piece of wood How could the hammer be modified to make the task easier
A bicycle is an example of what machine
A man and a woman exert a total of 900 N by pushing a car 20 meters across the street The man exerts twice as much force as the woman How much work does the man do
What factor prevents a machine from operating at 100 percent efficiency