The figure 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
the man with blue shirt has weight 800 N, his distance from the pivot is 0.8 m, to make the seesaw balance, the man with 640 N weight in red shirt needs to sit in .... m
1 m
The picture is one of levers, what type of lever is it?
third class levers
which direction of this moment?
anti-clockwise moment
from the pictures, which one is the 2nd class of lever?
Nut Cracker (pict no 5)
Calculate the distance of the objects from the fulcrum if the moment is 10 Nm
1 m
Which letter is the pivot?
B
Which letter shows where you should applied effort?
A
Find one of the example of lever near to you
your arm