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A pair of pliers is an example of:
A nail clipper is an example of:
A tweezer is an example of:
A 60 newton rock is lifted 6 meters in 10 seconds. What is the power used?
A woman lifts a 300 newton child a distance of 1.5 meters in 0.75 seconds. What is her power output in lifting the child?
Marie Claire uses a force of 25 newtons to lift her grocery bag while doing 50 joules of work. How far did she lift the grocery bags?
Two friends move a couch a distance of 15 meters using a force of 25 newtons. How much work is used?
Janet expends 125 Joules of work to move a box up an inclined plane. The amount of work produced is 90 Joules. What is the efficiency of the machine?
A woman pushes a lever down 2 meters with a force of 75 newtons. A load of 50 newtons at the other end moves 3 meters. What is the efficiency of this machine?
A piece of paper mysteriously moves from one side of the desk to another. This is the result of:
An action is a force acting in one direction, and the naturally occurring force in the opposite direction is the:
Which of the following is not a simple machine?
A mover uses a 12-foot long ramp that reduces the force he needs to move any object in half. Since the mechanical advantage of a ramp is equal to the length of the ramp divided by the height of the ramp, how high is the bed of the mover’s truck?
Kylie kicked a soccer ball and exerted 150 newtons of force. If she did 1500 joules of work, how far did she kick the soccer ball?
Three gears are connected in a series. If the first gear turns counterclockwise, the third gear will turn:
Six gears are connected in a series. If the first gear turns counterclockwise, the third gear will turn:
Two gears are connected as part of a series. If the first gear has 12 teeth and the second gear has 84 teeth, what is the rotation ratio of the first gear to the second gear?
The gears on a bike reflect a 5:2 turn ratio between the front wheel and back wheel. If someone pedals 100 revolutions per minute (rpm), how fast will the rear wheel rotate?
The gears on a bike reflect a 5:1 turn ratio between the front wheel and back wheel. If someone pedals 250 revolutions per minute (rpm), how fast will the rear wheel rotate?
A lever with an effort arm of 15 inches and a load arm of 3 inches would have a mechanical advantage of:
If a movable pulley system provides a mechanical advantage of 2, a person could move a load that requires 50 newtons of force to move with a force of:
If a movable pulley system provides a mechanical advantage of 2, a person could move a load that requires 40 newtons of force to move with a force of:
A block and tackle pulley is set up with a mechanical advantage of 4. A mover could use it to reduce the amount of effort needed to move a load of 120 newtons with a force of:
An astronaut’s mass measures to be approximately 75 kilograms. What is their approximate mass on the moon expected to be?
Sandra hit a tennis ball 12 meters away. If she exerted 50 newtons of force, how much work did she do?