Force and Pressure Worksheet-4

Force and Pressure Worksheet-4

1. Barometer is used for measuring:

(a) Liquid pressure                      (b) Thrust

(c) Atmospheric pressure           (d) Air temperature

2. The force used by an archer to pull a bow is:

(a) muscular force                       (b) friction force

(c) gravitational force                 (d) elsatic spring force

3. Which of the following is NOT attributable to application of force?

(a) rowing of a boat

(b) bursting of a balloon while blowing

(c) pedaling a cycle

(d) catching a moving cricket ball

4. In the picture shown below, the man is:

(a) applying force on the stool

(b) applying pressure on the stool

(c) not applying any force on the stool

(d) adding to the gravitational pull of earth on the stool

5. The speed of a falling body increases continuously. This is because:

(a) no force acts on it

(b) it is very light

(c) air exerts a frictional force along the direction of motion

(d) the earth attracts it

6. A book remains at rest on a table. It is so because of:

(a) no force acts on it

(b) friction between the book and the surface of table

(c) force exerted by book on the table, is same as the force exerted by the table on the book

(d) all of these

7. Deep sea divers put on special suit to:

(a) maintain their body temperature in cold sea water

(b) protect against sea animals

(c) maintain pressure

(d) keep them dry

8. A coin flicked across a table will stop, because:

(a) it is heavy                                 (b) no force is acting on it

(c) earth attracts the coin           (d) table exerts a frictional force

9. The magnitude of non-contact force depends upon:

(a) distance between two bodies

(b) mass of the two bodies

(c) chemical properties of the two bodies

(d) all of these

10. A ball placed on a table starts rolling when table is tilted. Which is the force which causes this motion?

(a) Friction                                    (b) push by table

(c) rolling force                             (d) gravitational pull by earth

Answer Key:

(1)-(c); (2)-(a); (3)-(b); (4)-(a); (5)-(d); (6)-(d); (7)-(c); (8)-(d); (9)-(a); (10)-(d)