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A body of mass 300 gm is at rest. What force inNewton will you have to apply to move it through200 cm in 10 sec.? |
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Answer» t= 10 seconds S distance= 200 cm=2 metres mass = 300 grams= 0.3 kilograms Velocity=S/t=2/10=0.2 metre/ sec initial velocity u= 0 Acceleration = (v-u)/t ⇒a=(0.2-0)/10 ⇒a=0.02 metre/sec² Now mass = 0.3 kg So force=m×a ⇒F=0.3×0.02 ⇒Force=0.006 Newtons. |
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