If the ball falls from the shelf when it is placed back there, h = 2m What is its speed the instant before it hits the ground? Set PE =KE and solve for v.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

answer; equivalent to a one(1) horsepower motor;

prndulum needs thread, weight clock to time swings