The work done is 137 joules.
Lifting opposes the acceleration of gravity, which is 9.8 m/sec/sec.
20 x 0.7 x 9.8 = 137 J (kg-m2/sec2)
a fallen treee is lifted 2.75 meters. How much work is done?
About 20kg of force.
20kg is about 196N
2 Newton-meters
20kg is 44 pounds.
a fallen treee is lifted 2.75 meters. How much work is done?
About 20kg of force.
3.1428st
20kg.
1400j
20kg is about 196N
2 Newton-meters
10-20kg
7.2 pounds (rounded)
20kg is 44 pounds.
20kg
If a 100 N box is lifted 3 meters off the ground, the answer is 300 joules.