Work, Force & Energy Worksheet-6
(A) Fulcrum (B) Load (C) Effort
(A) Class-2 lever (B) Class-3 lever (C) Class-1 lever
a. Rohit is doing work when he is writing answers of his Math paper.
b. If you throw a ball up, it comes down due to frictional force.
c. Frictional force causes to heat up an object.
d. Complex machines consist of two or more simple machines working together to reduce our work.
e. A wheelbarrow is an example of class-3 lever.
f. A machine that uses a single applied force to overcome a single force is known as Simple machine.
Fill in the blanks:
(13) a. False; b. False; c. True; d. True; e. False; f. True