A particle of mass $$100$$ gm thrown vertically upwards with a speed of $$5$$ $$m/s$$. The work done by the force of gravity during the time, the particle goes up is

Question

A particle of mass $$100$$ gm thrown vertically upwards with a speed of  $$5$$ $$m/s$$.  The work done by the force of gravity during the time, the particle goes up is

Infinity Learn · Accepted Answer

Work done by gravity   $$=$$− Ve   from work energy theorem,  work done $$=$$ change in $$KE$$ initial velocity $$=$$ $$5m/s$$ final velocity $$=$$ $$0$$ mass m $$=1001000kg$$   W   $$=$$    K.$$Efinal-KEinitial$$ W   $$=$$ $$0-$$  $$12$$ $$mv2$$ $$W=-$$ $$121001000$$ $$52$$ $$W=-1.25$$ joule Here  gravity is opposite to the displacement and hence the work done by gravity is equal to negative  of ptential energy  when the body moves up.

A particle of mass 100 gm thrown vertically upwards with a speed of 5 m/s. The work done by the force of gravity during the time, the particle goes up is

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