Question

Four particles of masses m₁,m₂,m₃ and m₄ are placed at the
vertices A,B,C and D as respectively of a square shown.
The COM of the system will lie at diagonal AC if
(a) m₁ = m₃
(b) m₂ = m₄
(c) m₁ = m₂
(d) m₃ = m₄

Answer 1

Explanation:

In the following situations, identify the agent exerting the force. Also, state

the effect of the force in each case.

(a) Squeezing a piece of lemon between the fingers to extract its juice.

(b) A person diving into a swimming pool.

(c) A labourer moving a loaded cart.

(0) A car coming to rest once its engine is switched off.

te) An athlete making a high jump to clear a bar kept at a certain height.

Answer 2

Answer:

cv gv. v. c.f. c.f. veg veg cvvc. c.f.