Force and Pressure-Sample Papers

1.  Give two examples of muscular force.     1

2.  State any three effect of force.     3

3.  Do liquids exert equal pressure in all direction?     1

4.  Why our lungs expand during inhalation?     1

5.  When a ball is thrown, it stops rolling after some time. Why?     2

6.  Describe various types of force in brief.     4

7.  Derive an activity to show that liquid exerting pressure on the wall of container.     4

8.  Write true or false.     3

a. Force of gravity is contact force.

b. Pascal is the unit of force.

c. The force can change the state of motion of an object.

9.  Prove air has a pressure.     3

10.  What do you meant by force of friction? Also prove force depends on nature of two surfaces in contact.     3