Please explain all four question
Q.15. Explain the following:
(a) Why is it easier to pull down the branch of a tree from its free end than from anywhere else?
(b) Why do we use a long handle with a screw jack?
(c) Why do we use a long spanner to open a tight nut?
(d) Why is the upper stone of a hand flour grinder provided with a handle near its rim?
Dear Student,
A nut needs torque to move, which is equal to F.d i.e. a longer distance needs minimum force.
As
Force =torque/radius.
As spanner has longer length so less force is needed
Hope this information will clear your doubts about topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards
A nut needs torque to move, which is equal to F.d i.e. a longer distance needs minimum force.
As
Force =torque/radius.
As spanner has longer length so less force is needed
Hope this information will clear your doubts about topic.
If you have any more doubts just ask here on the forum and our experts will try to help you out as soon as possible.
Regards