A ball of mass 0.2 kg is thrown vertically upwards by...

A ball of mass $0.2 \mathrm{~kg}$ is thrown vertically upwards by applying a force by hand. if the hand moves $0.2 \mathrm{~m}$ while applying the force and the ball goes up to $2 \mathrm{~m}$ height further. find the magnitude of the force. (Consider $\mathrm{g}=10 \mathrm{~ms}^{-1}$ ) (A) $16 \mathrm{~N}$ (B) $20 \mathrm{~N}$ (C) $22 \mathrm{~N}$ (D) $4 \mathrm{~N}$

A ball of mass $0.2 \mathrm{~kg}$ is thrown vertically upwards by applying a force by hand. if the hand moves $0.2 \mathrm{~m}$ while applying the force and the ball goes up to $2 \mathrm{~m}$ height further. find the magnitude of the force. (Consider $\mathrm{g}=10 \mathrm{~ms}^{-1}$ )
(A) $16 \mathrm{~N}$
(B) $20 \mathrm{~N}$
(C) $22 \mathrm{~N}$
(D) $4 \mathrm{~N}$

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Key Concepts

Work

Work is the energy transferred when a force is applied over a displacement. It is calculated as the product of the force component in the direction of movement and the distance over which it acts. This concept is fundamental in analyzing how forces change the energy state of a system.

Work-Energy Theorem

The work?energy theorem states that the net work done on an object is equal to its change in kinetic energy. This principle helps connect the amount of work done by applied forces and opposing forces, like gravity, to the resulting motion and speed of the object.

Gravitational Potential Energy

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field. It is given by the product of the object's mass, the acceleration due to gravity, and the height above a reference level, and is central to understanding energy transformations in vertical motion.

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