Mechanical Advantage - Incline Plane, Pulley, and Lever

A wheelbarrow is an example of

• First Class Lever
• Second Class Lever
• Third Class Lever
• Fourth Class Lever

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In a first class lever, the _____ is in the middle.

• Effort
• Fulcrum
• Load
• Machine

Tags

NGSS.MS-PS2-2

In a second class lever, the ______ is in the middle.

• Effort
• Fulcrum
• Load
• Machine

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

In third class levers, the ______ is in the middle. 

• Effort
• Fulcrum
• Load

Tags

NGSS.MS-PS2-2

Which of these is not part of the lever?

• Object
• Fulcrum
• Load
• Lever

The force placed on the simple machine to move the load is called the ____.

• Effort
• Fulcrum
• Load
• Lever

How much work is produced when 350 N is used to move a car 5 m (W=Fd)?

• 70 J
• 1750 J
• 355 J
• 175 J

Lamar Gant, U.S. powerlifting star, became the first man to deadlift five times his own body weight in 1985. Deadlifting involves raising a loaded barbell from the floor to a position above the head with outstretched arms. Determine the work done by Lamar in deadlifting 300 kg to a height of 0.90 m above the ground (W=Fd).

• 270 J
• 2646 J
• 333 J
• 3.00X10^-3 J

If the weight of the block is 10N, how much force does one have to apply to lift it using this pulley (MA=2)?

• 2N
• 5N
• 10N
• 15N

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

A box of weight W is lifted by a force F using a lever as shown below.

What is the mechanical advantage of the lever (MA=Input Distance/Output Distance)?

• 0.5

• 2

• 3

• 6