The number of times the machine multiplies the input force is this
What is the mechanical advantage of the machine
100
An axe, a zipper, and a front tooth are example of this simple machine
What is a wedge
100
The work in joules when a force of 10 N is used to move an object over 35 m.
What is 350 J
100
Handles of a wheel barrow are 2.4m from where they are attached to the wheel. A heavy stone on the wheel barrow was 1.2m from the wheel. This is the ideal mechanical advantage of the wheel barrow.
What is 2.
200
This is the other form of SI unit of work and it is defined as this.
What is Newton-Meter. What is the amount of work done when a force of 1 N is exerted in moving an object a distance of 1 m.
200
The force exerted on the machine is called this and the force exerted by the machine is called this
What is the input force and the output force
200
The car's steering wheel is an example of this simple machine
What is wheel and axle
200
Suppose that with a pulley system, you need to exert a force of 1400 N to lift a heavy object. Without the pulley system you need to exert 4200 N to lift the object. This is the mechanical advantage of the pulley system.
What is 3
200
Radius of a bicycle wheel is 30 cm. The radius of the bicycle's axle is just 5cm. This is the ideal mechanical advantage of the wheel and axle.
What is 6.
300
In order to do work on an object, the object must to do this as a result of the force exerted.
What is move some distance.
300
This is the mechanical advantage of a machine without friction and this is what it is with friction ( or in real situation)
What is the ideal mechanical advantage and actual mechanical advantage
300
An inclined plane wrapped around a central cylinder is called this
What is a screw
300
You exert a force of 300 N to lift a box 2m from the floor to a shelf in 3s. This is your power in watts.
What is 200W
300
There is a bag of groceries in the shopping cart. This is the situation when force is exerted but no work is done, and this is the situation when force is exerted and also work is done (using the bag of groceries example)
What is if the bag of groceries is held and if the bag is lifted out of the shopping cart.
400
This is the amount of work done on an object in one unit of time
What is power
400
This is obtained when the output work is compared to the input work in a machine and expressed as a percent
What is efficiency
400
A single fixed pulley such as a flagpole, changes this factor of the input force (hint: not the amount)
What is the direction
400
You do 4000 J of work using a sledge hammer. The sledge hammer does 3000 J of work on the spike. This is the efficiency of the sledge hammer.
What is 75%
400
These are the six types of simple machines and examples of each in daily life.
What is screw - jar lid, inclined plane - wheelchair ramp, pulley - flagpole, wedge - sharp knife, lever - baseball bat, wheel and axle - bicycle
500
The SI unit of power is expressed in this and this
What is Joule per second or Watt
500
This is the relationship between the input and output forces when the mechanical advantage is 1 and this is an example of such a machine
What is they are the same and fixed pulley is such an example
500
Door, wheel barrow, bottle opener are examples of this class of levers, seesaw, scissors, pliers are examples of this class of levers, and baseball bat, shovel, fishing pole are examples of this class of levers
What is second, first, and third
500
There is a ramp for wheel chair access to a door. The door is 3 m above the level of the side walk. The ramp is 15 m long. This is the ideal mechanical advantage of the ramp.
What is 5
500
These are the three parts in a lever. Identify each part in an arm bent at the elbow.
What is the output force, the input force, and the fulcrum. What is the output force at the wrist joint, what is the fulcrum at the elbow, and what is the input force at the upper arm.