Physics Class 6 ICSE Solutions - Simple Machines

Fill in the blanks (a) The useful work done by an actual machine is always less than the work done on the machine.

Fill in the blanks (b) In class II levers, the load is in between fulcrum and effort.

Fill in the blanks (c) The mechanical advantage of class III lever is always less than 1.

Fill in the blanks (d) A pulley is used to change the direction of effort.

Fill in the blanks (e) Mechanical advantage of an inclined plane is always greater than 1.

When is work said to be done by a force ?

What is energy ?

What do you understand by a machine ?

What is the principle on which a machine works ?

State two functions of a machine.