That depends on the mass of the sack of rice, which isn't given in the question.
(But it doesn't depend on the time taken to perform the lift, which is given.)
The work done in lifting the sack of potatoes vertically can be calculated using the formula: work = force x distance x cos(theta), where force = weight x gravity. So in this case, the work done would be 20 kg x 9.8 m/s^2 x 6.5 m = 1274 J.
Work = (weight) x (height raised) = (mass) x (gravity) x (height) =
(20) x (9.8) x (6.5) = 1,274 newton-meters = 1,274 joules
or 940.29 foot-pounds (rounded)
in ur case force is weight
so :
work= (m*g) *d
work= [20kg* 9.81m/s^2 ] *6.5m
work= 1275.3 Joules (or J)
You would have to lift 1 meter every 5 seconds because 25 seconds divided by 5 meters is 5 seconds every 1 meter so it would be almost no work
Work = m g h
So 20 * 9.8 * 6.5
Could be simplified. Unit is joule
Use the formula for potential energy: PE = mgh (mass x gravity x height). If the mass is in kilograms, the height in meters, and you use 9.8 m/s2 for gravity, the answer will be in Joule.
The work done to lift the sack of potatoes vertically 6.5m can be calculated using the formula: work = force x distance, where force = mass x gravity. So, the work done would be approximately 1274 Joules.
The force required to lift a 20kg object on Earth would be equivalent to the object's weight. On Earth, the force of gravity is approximately 9.81 m/s^2, so the force needed to lift a 20kg object would be 20kg * 9.81 m/s^2 = 196.2 N.
10-20kg is equivalent to 22-44 pounds.
The force needed to hold up a 20kg bag of sand would be equivalent to the weight of the bag, which is approximately 196 Newtons (N) on Earth.
The work done to lift a 25kg sack of cement vertically 4.3m is approximately 1075 Joules. This can be calculated using the formula: Work = Force x Distance, where Force = mass x gravity = 25kg x 9.81 m/s^2 and Distance = 4.3m.
The force required to lift a 20kg object on Earth would be equivalent to the object's weight. On Earth, the force of gravity is approximately 9.81 m/s^2, so the force needed to lift a 20kg object would be 20kg * 9.81 m/s^2 = 196.2 N.
The force needed to hold up a 20kg bag of sand would be equivalent to the weight of the bag, which is approximately 196 Newtons (N) on Earth.
3.1428st
20kg.
To convert kilograms to Newtons, you need to multiply the mass in kilograms by the acceleration due to gravity (9.81 m/s^2). Therefore, 20 kilograms is equal to 196.2 Newtons.
10-20kg
7.2 pounds (rounded)
20kg
20 kilograms is equivalent to approximately 44.09 pounds.
That takes 80 foot-pounds, equivalent to about 59 joules.
To lift a 78 pound person into the air with a constant velocity, you would need to exert a force equal to 78 pounds (the weight of the person) in the upward direction. This force is required to counteract the force of gravity acting on the person.
they are approximately 3 stones in 20 kg