Force

The beam is balanced.

• True

• False

A force of 4 N acts on a lever 2 m from the pivot. What is the moment?

• 8 Nm

• 6 Nm

• 2 Nm

• 3 Nm

James weighs 200 N and sits 1 m from the pivot. Jane weighs 100 N. How far from the pivot must Jane be to balance the beam?

• 0.5 m

• 1 m

• 2 m

• 4 m

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.

The easiest way to open a heavy door  is by applying the force

• Near the hinges
• In the middle of the door
• At the edge of the door far from the hinges
• At the top of the door

What is the unit of moment force?

• N

• m

• Nm

• N/m

Which of the following lever is balanced?

(Choose two correct answers.)

• 
• 
• 
• 

What mass now balances the bags?

• 3.5 kg

• 7.0 kg

• 12 kg

• 14 kg

Which diagram shows the rod in equilibrium?

• A

• B

• C

• D

Which beams rotate clockwise?

• P and Q only

• P and R only

• Q and R only

• P, Q and R