Sawarali take 20s to tocarry a bag wight 20kg to the hight of 5m. Find the power
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Sawarali take 20s to tocarry a bag wight 20kg to the hight of 5m. Find the power
Answer
Swaralee takes 20 seconds to carry a bag weighing 20 kg to a height of 5 m. How much power has she used.
Assuming she is on earth and gravity is 9.8 m/s²,
Assuming she is on earth and gravity is 9.8 m/s²,(20 kg x 9.8 m/s²) × (5 m/20 s) = 196 N × 0.25 m/s = 49 W
Assuming she is on earth and gravity is 9.8 m/s²,(20 kg x 9.8 m/s²) × (5 m/20 s) = 196 N × 0.25 m/s = 49 WThis ignores the power exerted to carry herself up the 5 m, and is commonly how tractors, locomotives, etc. are rated.
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If a mass of 10 kg is dropped from a height of 10 meters on a weighing scale, what weight would the weighing scale measure?
More answer:-
The weight of an object is how much force is on it. What the scale would measure is dependant on how fast the weight decelerated on impact with the scale. After the mass is at rest, the scale would simply measure the force of gravity on the object which is approximately 9.8m/s^2(Earth’s gravitational.
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Someone hauls a load weighing 600N through a vertical height of 10m in 20s. How much useful work does she do? What is her useful power output (g=10N/kg)?
Answer
The formula for calculated the work done by a force over a specific distance is as follows: Work Done = Force x Distance (or displacement, however you wish to call it) or W = Fd With this equation, you can work out that the work done is 6000J / joules (Nm or Newton metres) as the force, which is 600N.