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Kinetic Friction

Question 16Ca...

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Question 16
Cartilage is present in the joints of our body, which helps in their smooth movement. With advancing age, this cartilage wears off. How would this affect the movement of joints?

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Solution

The wearing off of cartilage will increase the friction. As a result, the movement of joints will become difficult which may lead to joint pains.

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Q. Question 16
Cartilage is present in the joints of our body, which helps in their smooth movement. With advancing age, this cartilage wears off. How would this affect the movement of joints?

Q. Assertion :Inflammation of skeletal joint may immobilise the movements of the joint. Reason: Uric acid crystals in the joint, cavity and ossification of articular cartilage lead to this.

Q. We can move our arm forwards and backwards, up and down. (a) Which joint allows such movement?
(b) Name another such joint present in our body?
(c) Is the joint present in our knees similar to this joint?

Q. Read the given statements and select the correct option.
Statement 1 : Inflammation of a skeletal joint may immobilise the movements of the joint.
Statement 2 : This is caused due to uric acid crystals in the joint cavity and ossification of articular cartilage.

Q. Which cartilage is present at the joints of long bones

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Kinetic Friction

Standard XII Physics

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