Force & Pressure

Force and pressure Worksheet-13

56. In the following situations identify the agent exerting the force and the object on which it acts. State the effect of the force in each case.

(a) Squeezing a piece of lemon between the fingers to extract its juice.

(b) Taking out paste from a toothpaste tube.

(c) A load suspended from a spring while its other end is on a hook fixed to a wall.

(d) An athlete making a high jump to clear the bar at a certain height.

57. (a) While constructing dams, the base is made more wide. Why?

(b) Why does blood ooze out when there is a slight cut on your body?

Force and pressure Worksheet-14

1. Force of friction is an example of non-contact force.

2. If two forces act in opposite directions on an object, the net force is the difference between the two forces.

3. The forces of friction can be reduced by using lubricants.

4. The force exerted per unit area is called magnitude.

5. A force can change the state of motion of an object.

6. A push or pull on an object is called force.

Force and pressure Worksheet-15

21. Magnetic force makes the Earth move around the Sun.

22. Frictional force enables us to drive and walk.

23. Electrostatic, magnetic and gravitational forces are examples of non-contact force.

24. Pressure is defined as the force per unit volume.

25. The SI unit for pressure is pascal.

26. Newton/m2 is the unit for pressure.