minthu gh8 — SteemCN

Within elastic limit ….. is directly proportional to the strain.
The strain produced is proportional to the ………. .
The force applied to an elastic body is called ………. .
The ratio of the load to ……. is defined as mechanical advantage.
The ……… of a machine is always less than 100%.
One ……… is equal to a rate of energy transfer of 1 joule per second.
35.The SI unit of power is ……… .
The SI unit of the mechanical power is ……. .
If the work done in 1 second is ……. the power is 1 watt.
The strain produced is proportional to the ……… .
The rate of doing work is defined as ………. .
There are ……….. fundamental forces.
(13) The gravitational force is a ……… range force .
(14) Weight has both magnitude and ………. .
(15) The SI unit of weight is ……… .
(16) Mass is a scalar quantity and its SI unit is ……… .
(17) The gravitational force interact between ………. .
(18) The weight of 50 kg mass is ……….. .
(19) The nuclear force is a ……. range force.
(20) The ratio of mass to volume is defined as ……… .
(21) The density of ice is ……….. than that of water.
(22) The symbol of density is ρ and it is a ……..