Advertisements
Advertisements
प्रश्न
Name a machine to obtain gain in speed ?
Advertisements
उत्तर
To obtain gain in speed: when a pair of scissors is used to cut the cloth, its blades move longer on cloth while its handles move a little.
संबंधित प्रश्न
What is a lever?
Draw a diagram of a lever which is always used as a force multiplier. How is the effort arm related to the load arm in such a lever?
Define Lever
Give three examples for leavers of the third order.
Which class of lever found in the human body is being used by a boy when he raises the weight of his body on his toes?
The following belong to which class of lever?
A claw-hammer
The following belong to which class of lever?
A fire tongs
The following belong to which class of lever?
Sugar tongs
Draw a labelled sketch of a second class lever. Give one example of such a lever.
The length of a nut-cracker is 12 cm. A nut, when kept at a distance of 4 cm from its fulcrum, requires an effort of 100 gf to crack it. What force will be required to crack the nut without using the nut-cracker?
