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(C) $1$. When Saina grabs the bag at the lowest point,the system (Saina + bag) undergoes an inelastic collision. Momentum is conserved,but kinetic ene

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$h_0 > h_1 = h_2$

Vedclass · Answer

(C) $1$. When Saina grabs the bag at the lowest point,the system (Saina + bag) undergoes an inelastic collision. Momentum is conserved,but kinetic energy is lost. Therefore,the total mechanical energy of the system decreases,resulting in $h_1 $2$. When Saina reaches the lowest point again while swinging backward,she is moving with a certain velocity $v$. When she lets go of the bag,the bag continues with velocity $v$ (horizontally),while Saina's velocity remains $v$ because the release is a horizontal separation. Since the mass of the system decreases but the velocity of Saina remains the same,the mechanical energy per unit mass remains constant. Thus,the height reached by Saina remains the same,$h_2 = h_1$.$3$. Therefore,the relationship is $h_0 > h_1 = h_2$.

Column-$I$	Column-$II$
$(1)$ Work done is zero	$(a)$ By gravitational force (when body moves down)
$(2)$ Work done is positive	$(b)$ Against gravitational force (when body moves up)
$(3)$ Work done is negative	$(c)$ By centripetal force

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Explain with illustrations the meaning of work,energy,and power in everyday life and state that this meaning has no relation with the meaning in physics.

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Column-$I$ Column-$II$

$(1)$ Work done is zero $(a)$ By gravitational force (when body moves down)

$(2)$ Work done is positive $(b)$ Against gravitational force (when body moves up)

$(3)$ Work done is negative $(c)$ By centripetal force

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