Q.1.
Moments (turning forces) depend on .......
Q.2.
The moment will be increased .......
Q.3.
Jane weighs 400N. She sits on a see-saw 1.5m from the pivot (center). Calculate the moment caused by Jane.
Q.4.
Amir weighs 500N. He sits on a see-saw 200cm from the pivot (center). Calculate the moment caused by Amir.
Q.5.
Two children weigh 300N and 400N, they sit 2m and 3m away from the pivot (center) on the same side of the see-saw. What is their total moment?
Q.6.
A friend joins the two children (Q5) and sits on the other end of the see-saw. He weighs 600N. How far from the pivot must he sit to balance the see-saw?
Q.7.
A spanner is 20cm long. A force of 10N is applied to undo a bolt. What is the moment (turning force)?
Q.8.
A 40cm spanner is used to produce the same turning force as QWhat force would be needed?
Q.9.
A moment of 50Nm is needed to open a jar. The pliers are 10cm long. What force is needed?
Q.10.
A moment of 80Nm is needed to undo a wheel nut. The spanner is 20cm long. What force is needed?