{"id":22168,"date":"2022-06-05T22:00:56","date_gmt":"2022-06-05T16:30:56","guid":{"rendered":"https:\/\/cbselibrary.com\/?p=22168"},"modified":"2022-08-19T15:34:04","modified_gmt":"2022-08-19T10:04:04","slug":"selina-concise-physics-class-6-icse-solutions-force","status":"publish","type":"post","link":"https:\/\/cbselibrary.com\/selina-concise-physics-class-6-icse-solutions-force\/","title":{"rendered":"Selina Concise Physics Class 6 ICSE Solutions – Force"},"content":{"rendered":"
ICSE Solutions<\/a>Selina ICSE Solutions<\/a>ML Aggarwal Solutions<\/a><\/p>\n APlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 6 Physics. You can download the Selina Concise Physics ICSE Solutions for Class 6 with Free PDF download option. Selina Publishers Concise Physics for Class 6 ICSE Solutions all questions are solved and explained by expert teachers as per ICSE board guidelines.<\/p>\n Selina Class 6 Physics ICSE Solutions<\/a>Chemistry<\/a>Biology<\/a>Maths<\/a>Geography<\/a>History & Civics<\/a><\/p>\n Selina Concise ICSE Solutions for Class 6 Physics Chapter 3 Force<\/strong><\/p>\n Test yourself<\/strong><\/span><\/p>\n A. Objective Questions<\/strong><\/span><\/p>\n 1. Write true or false for each statement<\/strong><\/p>\n (a)<\/strong> The frictional force acts in the direction of motion of body (b)<\/strong> The unit of weight is kilogram (c)<\/strong> A force can change the direction of motion of a moving body. (d)<\/strong> A force increases the mass of the body when applied on it. (e)<\/strong> The force of friction is always disadvantageous. (f)<\/strong> The sliding friction is more than the rolling friction. (g)<\/strong> Liquids offer more friction than the gases. (h)<\/strong> A wet oily road offers more friction than a dry rough road. 2. Fill in the blanks<\/strong><\/p>\n (a)<\/strong> Force is applied as push<\/strong> or pull.<\/strong> 3. Match the following columns<\/strong><\/p>\n <\/p>\n Answer.<\/strong><\/p>\n <\/p>\n 4. Select the correct alternative\u00a0<\/strong> (b)<\/strong> A force does not change<\/p>\n (c)<\/strong> A force to be expressed correctly requires<\/p>\n (d)<\/strong> Friction<\/p>\n (e)<\/strong> Friction is reduced by<\/p>\n (f)<\/strong> Friction<\/p>\n (g)<\/strong> Friction is increased if<\/p>\n B. Short\/Long Answer Questions<\/strong><\/span><\/p>\n Question 1.<\/strong><\/span> Question 2.<\/strong><\/span> Answer:<\/strong><\/span><\/p>\n Question 3.<\/strong><\/span> Question 4.<\/strong><\/span> Question 5.<\/strong><\/span> Question 6.<\/strong><\/span> Question 7.<\/strong><\/span> Answer:<\/strong><\/span><\/p>\n Question 8.<\/strong><\/span> Question 9.<\/strong><\/span> Question 10.<\/strong><\/span> Question 11.<\/strong><\/span> Question 12.<\/strong><\/span>\n
\n(a)<\/strong> move it, if it is not in motion
\n(b)<\/strong> stop it, if it is moving
\n(c)<\/strong> increase or decrease its speed
\n(d)<\/strong> change its direction of motion
\n(e)<\/strong> change its shape or size if it is not free to move.<\/li>\n\n
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\n(a)<\/strong> the smoothness (or roughness) of the surfaces in contact, and
\n(b)<\/strong> the weight of the sliding (or rolling) body.<\/li>\n
\n(a)<\/strong> Friction opposes the motion
\n(b)<\/strong> Friction produces heat
\n(c)<\/strong> Friction causes wear and tear
\n(d)<\/strong> Friction reduces efficiency<\/li>\n
\n(a)<\/strong> making the surfaces smooth
\n(b)<\/strong> the use of lubricants
\n(c)<\/strong> the use of ball bearings
\n(d)<\/strong> streamlining the shape of the moving body.<\/li>\n
\nAnswer.<\/strong> False<\/p>\n
\nAnswer.<\/strong> False<\/p>\n
\nAnswer.<\/strong> True<\/p>\n
\nAnswer.<\/strong> False<\/p>\n
\nAnswer.<\/strong> False<\/p>\n
\nAnswer.<\/strong> True<\/p>\n
\nAnswer.<\/strong> True<\/p>\n
\nAnswer.<\/strong> False<\/p>\n
\n(b)<\/strong> On squeezing a gum tube, its shape<\/strong> changes.
\n(c)<\/strong> On pulling a string, its length<\/strong> increases.
\n(d)<\/strong> A moving football when kicked, its direction of motion<\/strong> changes.
\n(e)<\/strong> On applying brakes on a moving car, its speed slows down.<\/strong>
\n(f)<\/strong> We use ball bearings to reduce<\/strong> the friction.
\n(g)<\/strong> Friction opposes<\/strong> the motion.
\n(h)<\/strong> Lubricants are used to reduce<\/strong> friction.
\n(i)<\/strong> Friction causes wear and tear of moving parts of machine.<\/strong><\/p>\n
\n(a)<\/strong> A body falls downwards because of<\/p>\n\n
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\nName the term used for the push or pull ?
\nAnswer:<\/strong><\/span>
\nForce<\/p>\n
\nGive one example each of a force as<\/p>\n\n
\n
\nExplain the meaning of the term force.
\nAnswer:<\/strong><\/span>
\nForce:<\/strong> Force is a physical cause that changes or may tend to change the state of rest or the state of motion of an object. The S.I. unit of force is Newton.<\/p>\n
\nWhat effect can a force have on a stationary body ?
\nAnswer:<\/strong><\/span>
\nWhen a force is applied on a stationary body, it begins to move.<\/p>\n
\nWhat effects can a force have on a moving body ?
\nAnswer:<\/strong><\/span>
\nWhen a force is applied on a moving body, it can be made to stop or it can change the direction of motion.<\/p>\n
\nWhat effect can a force produce on a body which is not allowed to move ?
\nAnswer:<\/strong><\/span>
\nWhen a force is applied on a body which is not free to move, it gets deformed i. e., the shape or size of the body changes.<\/p>\n
\nGive one example each to indicate that the application of a force<\/p>\n\n
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\nState the effect produced by a force in the following cases :
\n(a)<\/strong> The sling of a rubber catapult is stretched
\n(b)<\/strong> A man pushes a heavy cart
\n(c)<\/strong> A player uses his stick to deflect the ball .
\n(d)<\/strong> A cyclist applies brakes
\n(e)<\/strong> A spring is compressed.
\nAnswer:<\/strong><\/span>
\n(a)<\/strong> The shape and size of catapult changes i.e., its length increases.
\n(b)<\/strong> The heavy cart begins to move.
\n(c)<\/strong> The direction of the ball changes.
\n(d)<\/strong> The speed of the moving cycle is slowed down.
\n(e)\u00a0<\/strong>There is change in size and shape of spring.<\/p>\n
\nName the two kinds of forces in nature.
\nAnswer:<\/strong><\/span>
\nTwo kinds of forces in nature are :<\/p>\n\n
\nName the type of force which acts in the following cases:
\nAnswer:<\/strong><\/span>
\n(a)<\/strong> A coolie lifts a luggage
\nAnswer.<\/strong> Muscular force
\n(b)<\/strong> A bicycle comes to rest slowly when the cyclist stops pedalling
\nAnswer.<\/strong> Frictional force
\n(c)<\/strong> A stone falls from a roof
\nAnswer.<\/strong> Gravitational force.
\n(d)<\/strong> A comb rubbed with silk attracts the bits of paper
\nAnswer.<\/strong> Electrostatic force
\n(e)<\/strong> A string hangs with a load
\nAnswer.<\/strong> Force of tension.
\n(f)<\/strong> A horse moves a cart
\nAnswer.<\/strong> Muscular force
\n(g)<\/strong> A magnet attracts an iron pin
\nAnswer.<\/strong> Magnetic force
\n(h)<\/strong> A boy opens the door
\nAnswer.<\/strong> Muscular force
\n(i)<\/strong> An apple falls from a tree
\nAnswer.<\/strong>Gravitational force
\n(j)<\/strong> A man rows a boat.
\nAnswer.<\/strong> Muscular force.<\/p>\n
\nWhat do you mean by the gravitational force ? Give an example to illustrate it.
\nAnswer:<\/strong><\/span>
\nThe force of attraction on a body by earth is called gravitational force.
\nExample :<\/strong> The leaves and fruits fall from a tree downwards towards the ground, water in a river flows down streams, a ball thrown up goes to a height and then returns back on ground are some examples of motion due to gravitational force.<\/p>\n
\nDefine the term \u201cweight of a body\u201d
\nAnswer:<\/strong><\/span>
\nWeight:<\/strong> The weight of the body is the force with which the earth attracts it towards the centre. It depends on acceleration due to gravity.<\/p>\n