Scissors constitute of which simple machines?
Wedge and lever
Pulley and lever
Wedge and pulley
Pulley and inclined plane
The blades of scissors are made of wedges which move about a fixed fulcrum. The handles that are attached to it are levers.
Scissors and pliers belong to the same class of levers. Name the class of lever.
Find acceleration of 3kg block? Given string and pulleys are massless. Pulley and wedge is frictionless and wedge is fixed.
Answer the following questions :
(a) What are simple machines? Give examples.
(b) What are the advantages of using a machine?
(c) What is meant by a pulley?
(d) What can you use as an inclined plane?
(e) What is meant by a lever?
(f) What is meant by a complex machine? Give an example.
(g) How many types of levers are there? On what basis are they classified?
(h) What should we do to take care of machines?