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INTRODUCTION - Chapter 11 Force & Pressure class 8 ncert solutions Science - SaraNextGen [2024]


Question 1:

Give two examples each of situations in which you push or pull to change the state of motion of objects.

Answer:

Two examples of push force are as follows:

(i) A heavy box at rest is pushed to move it from one room to another. This changes the state of motion of the box.

(ii) A player pushes a football using his foot. This changes the state of motion of the ball.

Two examples of pull force are as follows:

(i) Rope is pulled to draw water from a well. This changes the state of motion of the water bucket.

(ii) A drawer is pulled to open it. This changes the state of motion of the drawer.

Question 2:

Give two examples of situations in which applied force causes a change in the shape of an object.

Answer:

Two examples of forces that cause a change in the shape of an object are as follows:

(i) Squeezing of a plastic bottle changes the shape of the bottle.

(ii) Deformation of clay by pressing it between the hands.

Question 3:

Fill in the blanks in the following statements.

(a) To draw water from a well we have to _________ at the rope.

(b) A charged body ________ an uncharged body towards it.

(c) To move a loaded trolley we have to _________ it.

(d) The north pole of a magnet ________ the north pole of another magnet.

Answer:

(a) To draw water from a well we have to __pull__ at the rope.

(b) A charged body __attracts__ an uncharged body towards it.

(c) To move a loaded trolley we have to __either push or pull__ it.

(d) The north pole of a magnet __repels__ the north pole of another magnet.

Also Read : Page-No-143:-Chapter-11-Force-&-Pressure-class-8-ncert-solutions-Science

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