Screw and The Wheel and Axle

The pitch of the screw is 2mm how far will the screw transverse after one turn of the screw?

• 1mm

• 2mm

• 3mm

• 4mm

The pitch of this square thread screw is 3mm how far will the screw transverse in half a turn?

• .75mm

• 1mm

• 1.25mm

• 1.5mm

The screw jack has a pitch of 1.5 mm and a handle that is 250mm long what is the velocity ratio? To the nearest whole number π = 3.14

• 523

• 1047

• 1570

• 2094

A historical screw printing press has a mechanical advantage of 1,500 when an effort of 20 newtons is applied to the handle what force is applied by the screw?

• 1,500N

• 2250N

• 3000N

• 3750N

The axle used in this well has a diameter of 200mm how far will the bucket travel if the wheel is turned half a turn?

• .157m

• .314m

• .471m

• .628

This winch has a mechanical advantage of 10 what effort is required to pull a Load of 250 newtons?

• 10

• 15

• 20

• 25

What is the name of this mechanical device often used in winches?

• Pawl and Rachet

• Rachet

• Pawl

• Thin ymag

In this mechanical device what is the name of the arm that drops down into the gear teeth?

• Pawl and Ratchet

• Ratchet

• Pawl

• Thin ymag

The diameter of the wheel is 75mm what length of rope is pulled through the wheel in two turns? π =3.14

• 118mm

• 235mm

• 471mm

• 589mm

The diameter of the axle is 25mm what is the length of rope moved in a turn of the axle? π = 3.14

• 39mm

• 78mm

• 117mm

• 156mm