Page 1 - Competency Based Worksheet- Force and Pressure

SAI INTERNATIONAL SCHOOL

Class 8
Competency Based Worksheet
Subject- Physics
Ch. -Force and Pressure

1. In which case is the force balanced?
a) Planets orbiting around the Sun in fixed orbits
b) An object sinking in water
c) A fruit dropping from a tree
d) A group of kids winning a tug-of-war game

2. When two forces applied on an object are equal and opposite, then these forces:
a) may move the object
b) may stop the object
c) may move the object and also change its shape
d) do not move the object but may change its shape

3. Which of the following does not work based on atmospheric pressure?
a) Rubber sucker
b) Syringe
c) Ink dropper
d) Spring balance

Resultant Force (Diagram-based)
4. In the figure, two boys (1 and 2) are shown applying force on a table. If the table move
towards the right, which one of the following statements is correct?

a) The magnitude of force applied by 1 is greater
than that of 2
b) The magnitude of force applied by 1 is smaller
than that of 2
c) The net force on the table is towards boy 1
d) The magnitude of force applied by 1 is equal to
that of 2

5. a) Observe the diagram and find the magnitude and direction
of the resultant force acting on the object.
b) Is the force acting on the object balanced or unbalanced?