Act. Levers

What type of lever is it?

• First class

• Second class

• Third class

At what distance from the fulcrum should be Ana in order to

balance the lever in which is sitting her brother, Javier?

• 30 m

• 2m

• 3m

• 250cm

What type of lever is it?

• First class

• Second class

• Third class

What type of lever is it?

• First class

• Second class

• Third class

Superman can lift a weight of 100 kg; but this rock weights 1500kg. At what distance

from the fulcrum should Superman applicate his force?

• 7,5 m

• 30 m

• 3m

• 10m

Indicate which of these levers are balanced

• A, C, D

• D, E

• E

• No one

With the wheelbarrow in the picture we want to transport two bags of 50kg each one. Indicate the type of lever. Calculate the effort force that must be done to lift this weight.

• Third class, 12,5 kg

• Second class, 12,5 kg

• Third class, 16,6666 kg

• Second class, 16,6666 kg

Calculate the force that I will have to do if I want to move a 90kg stone with the lever

shown in the figure. What kind of lever is it?

• 90kg, Second class

• 30 kg Second class

• 30 kg First class

• 20 kg Second class

What type of lever is it?

• First class

• Second class

• Third class

With the pliers in the figure you want to cut a wire that opposes a resistance equivalent

to 2kg. Calculate the effort force that must by done to cut the wire

• 166,66 g

• 181,81 g

• 1,81 kg

• 1,66 kg