Pulley

What does this image represent?

• A pulley

• A wedge

• A lever

• A wheel and axle

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

A pulley is an example of a:

• Simple Machine

• Book

• Science Tool

• Test Taking Strategy

What must a pulley have ?

• a rope

• wheel

• axle

• all the above

Tags

NGSS.MS-ETS1-1

What is this part of pulley?

• Axle

• Groove

• Rope

• Wheel

What is a formula to calculate the MA (mechanical advantage) of a pulley?

• MA= height/width

• MA= displacement of load / displacement of effort

• MA= radius of fixed pulley /radius of movable pulley

• MA= the number of ropes on the movable pulley

Tags

NGSS.MS-ETS1-1

What is the main purpose of a moveable pulley?

• To change the direction of the force

• To increase the speed of lifting

• To reduce the force needed to lift a load

• To increase the weight of the load

Tags

NGSS.MS-ETS1-1

What is the primary function of a pulley system in a construction crane?

• To increase the speed of lifting heavy loads

• To decrease the effort needed to lift heavy loads

• To stabilize the crane

• To increase the friction

Tags

NGSS.MS-ETS1-1

A pulley system with 3 supporting ropes will have a mechanical advantage of:

• 1

• 2

• 3

• 4

What do you call multiple pulleys working together?

• multi-pulley

• Block-and-Tackle

• Mechanical Advantage

Which of the following best describes a fixed pulley's mechanical advantage?

• 0

• 1

• 2

• Depends on the weight of the load