Simple Machines

How does a screw make work easier? 

• It changes the distance of the input force.
• It changes the direction of the input force. 
• It increases the effect of the input force. 
• In changes the distance and direction of the force being applied. 

How does a pulley make work easier? 

• It changes the direction of the input force.
• It changes the distance over which the input force is applied.
• It changes the amount of the input force applied 
• It changes direction and increases the effect of your input force

How does a wheel axle make work easier? 

• It increase the distance over which the input force is applied.
• It changes the direction of the input force.
• It increases the input force.
• It increase the input force and change the distance over which it is applied. 

Tags

NGSS.MS-PS3-1

How does an inclined plane make work easier? 

• It changes the direction of the input force. 
• It changes the distance over which the the input force is applied.
• It increase the effect of the input force.
• It changes the distance and direction of the input force. 

Tags

NGSS.MS-ETS1-1

How does a wedge make work easier? 

• It changes the direction of the input force.
• It changes the distance over which the input force is applied. 
• It increase the effect of the input force.
• It changes the direction of the input force and increase its effect. 

Tags

NGSS.MS-ETS1-1

How does a lever make work easier? 

• It increases the distance over which the input force is applied. 
• It increases the direction of the input force.
• It increases the effect of the input force.
• It changes the direction of the input force and increases the effect of the input force. 

True or false, ever machine has the same Mechanical Advantage. 

• False
• True

Tags

NGSS.MS-PS2-2

What reduces the efficacy of a simple machine? 

• Heat
• Friction 
• Mechanical Advantage 
• Input Force

True or False, a machine can be 100% efficient. 

• True
• False

If I lift a 500N object 2m off the ground, am I doing work? 

• Yes
• No

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5