Advertisements
Advertisements
प्रश्न
Answer the following in detail.
List all the forces acting on a boy sitting on a chair with the help of a suitable diagram.
Advertisements
उत्तर
1. Gravitational force (noncontact) acting downwards, Fgrav
2. The normal contact force of the chair acting upwards (Fnorm)
Both the forces are opposite and equal and balance each other.
APPEARS IN
संबंधित प्रश्न
Give two examples of situations in which applied force causes a change in the shape of an object.
An archer stretches her bow while taking aim at the target. She then releases the arrow, which begins to move towards the target. Based on this information fill up the gaps in the following statements using the following terms.
To stretch the bow, the archer applies a force that causes a change in its ______.
Write true or false.
A force can change the direction of motion of a moving body.
Fill in the blank.
A moving football when kicked, its .................. changes.
What effects can a force have on a moving body?
Define the term “weight of a body”
State if the following statement is true or false. Correct the statement if it is false.
Friction always acts in the direction of motion of an object.
Answer the following in detail.
Differentiate between mass and weight of an object.
What is momentum? Write its SI unit. Interpret force in terms of momentum. Represent the following graphically
(a) momentum versus velocity when mass is fixed.
(b) momentum versus mass when velocity is constant.
Two women are of the same weight. One wears sandals with pointed heels while the other wears sandals with flat soles. Which one would feel more comfortable while walking on a sandy beach? Give reasons for your answer.
