Torque

Which force produces the greatest torque?

• 20N with a lever arm of 1m

• 15N with a lever arm of 3m

• 10 N with a lever arm of 4m

• 8N with a lever arm of 5m

A 100 N weight is hung at the end of a horizontal pole 2 m long. The torque it produces is....

• 100 Nm

• 200 Nm

• 50 Nm

• cannot be determined without knowing the fulcrum

A meter stick is balanced. If a 0.5 kg mass is fastened 0.3 m to the left of the fulcrum and a 0.6 kg mass is fastened 0.25 m to the right of the fulcrum, the meterstick will...

• rotate counterclockwise (left)

• rotate clockwise (right)

• remain in balance

• move up and down

A torque acting on an object tends to produce....

• equilibrium

• rotation

• linear motion

• swinging

On a balanced seesaw, a boy three times as heavy as his partner would have to sit.....

• 1/3 the distance from the fulcrum

• at the fulcrum

• more than 1/3 the distance from the fulcrum

• anywhere he wants to sit

You are using a wrench to turn a stubborn screw. If you put a pipe over the end of the wrench to make the wrench handle twice as long, you will increase the torque by...

• two

• four

• eight

• one-half

torque is defined as....

• mass x velocity

• force x time

• force x lever arm distance

• mass x acceleration

A meter stick is balanced at the 50 cm mark. You tie a 20 N weight at the 20 cm mark. At which mark should a 30 N weight be placed so that the meterstick will again be balanced? (reminder: the mark on the meterstick is NOT the distance from the fulcrum!!)

• 20 cm

• 30 cm

• 50 cm

• 70 cm

How much torque is produced by a 30 N force with a 15 m lever arm?

• 0.5 Nm

• 2 Nm

• 450 Nm

• cannot be determined without another force

Two children are sitting on a uniform 6m long seesaw. One child with a weight of 300 N sits at the far end of the seesaw. Where must a 500 N child sit to balance the seesaw?

• on the same side as the 300 N child

• 1.8 m away from the fulcrum on the opposite side

• o.6 m away from the fulcrum on the opposite side

• 900 cm away from the fulcrum on the opposite side