Force Vectors and Moments

Which statement describes a vector?

• It has magnitude but no direction
• It has direction but no magnitude
• It has both direction and magnitude
• It has constant magnitude but no
   direction

Tags

CCSS.HSN.VM.A.1

What is the SI (metric) unit of measurement for force?

• lb-ft

• Kilograms

• Newtons

• m/sec^2

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

What sense does the vector have?

• down and right

• up and left

• up and right

• down and left

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

NGSS.HS-PS2-4

What is the resultant force?

100 N 230 N

<------ --------->

• 30 N to the right

• 230 N to the right

• 130 N to the right

• This is a balanced force

Tags

NGSS.MS-PS2-2

A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?

• The larger person moving further away from the center.
• Moving the smaller person closer to the center.
• Moving the smaller person further from the center.
• Making the larger person do nothing.

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

The figure below shows a man lifting a heavy rock using a steel bar. He pushes downwards on the end of the bar with a force F.

Which pivot positions allows the force F to be as small as possible?

• A

• B

• C

• D

Tags

NGSS.MS-ETS1-2

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the moment produced by the 15 N?

• 15 Nm (clockwise)

• 150 Nm (counter-clockwise)

• 1.5 Nm (counter-clockwise)

• 0.15 Nm (clockwise)

Describe the sense of the vector.

• up and right

• down and right

• up and left

• down and left

What is the moment acting on the seesaw?

• 1.6Nm
• 15Nm
• 16N
• 4Nm

Tags

NGSS.HS-PS2-1

What is the resultant vector's force?

• 10

• 20

• -10

• 14.14

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2