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Friction | Exercise

Question 33

A boy rolls a rubber ball on a wooden surface. The ball travels a short distance before coming to rest. To make the same ball travel longer distance before coming to rest, he may

(a) spread a carpet on the wooden surface.

(b) cover the ball with a piece of cloth.

(c) sprinkle talcum powder on the wooden surface.

(d) sprinkle sand on the wooden surface

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  • Solution

  • Transcript

Answer is (c) sprinkle talcum powder on the wooden surface.

Explanation:

Applying talcum will reduce the frictional force which will make the ball travel a longer distance.

"hey kids welcome to lido q a video i am vinit your leader tutor glad to bring you this question on your screen a boy rolls a rubber ball on a wooden surface the ball travels a short distance for before coming to rest to make the same ball travel longer distance before coming to rest he may spread a carpet on the wooden surface cover the ball with a piece of cloth sprinkle talcum powder on the wooden surface sprinkle sand on the wooden surface now option a b and d will increase the friction of the surface however sprinkling telcom powder will decrease the frictional force and the ball will travel further longer distance so c is the answer if you still have a doubt please leave a comment below do like the video and subscribe to our channel i'll see you in our next video until then bye kids keep practicing "

Set your child up for success with Lido, book a class today!

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta

Question 33

A boy rolls a rubber ball on a wooden surface. The ball travels a short distance before coming to rest. To make the same ball travel longer distance before coming to rest, he may

(a) spread a carpet on the wooden surface.

(b) cover the ball with a piece of cloth.

(c) sprinkle talcum powder on the wooden surface.

(d) sprinkle sand on the wooden surface

  • Solution

  • Transcript

Answer is (c) sprinkle talcum powder on the wooden surface.

Explanation:

Applying talcum will reduce the frictional force which will make the ball travel a longer distance.

"hey kids welcome to lido q a video i am vinit your leader tutor glad to bring you this question on your screen a boy rolls a rubber ball on a wooden surface the ball travels a short distance for before coming to rest to make the same ball travel longer distance before coming to rest he may spread a carpet on the wooden surface cover the ball with a piece of cloth sprinkle talcum powder on the wooden surface sprinkle sand on the wooden surface now option a b and d will increase the friction of the surface however sprinkling telcom powder will decrease the frictional force and the ball will travel further longer distance so c is the answer if you still have a doubt please leave a comment below do like the video and subscribe to our channel i'll see you in our next video until then bye kids keep practicing "

Our top 5% students will be awarded a special scholarship to Lido.

subject-cta
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