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If the pulley is fixed (hanging from the ceiling), and the rope passes over it, then 100 lbs of force is required. If the rope is fixed to the ceiling and passes under the pulley (which is fixed to the load), then 50 lbs of force is required.
Any one in the Newton family can lift over 50 lbs. The youngest is 12 yrs old.
30
In a Pulley System, the number of "Supporting Strings" is equal to the Force multiplier of the system. That is, if there are 4 supporting strings (plus the string you pull on), and the object being raised weighs 100 pounds, then the effort you supply is only 25 pounds. The Pulley System has a force multiplier of 4 times the input.
pressure required = force acting / area force acting = 14700 n Area = 3.14* r2 m2 Area = 3.14*( 4.57/100)2 Area = 0.00655 m2 The pressure requird = 14700/0.00655 pascal = 22.44 bar
800
If the pulley is fixed (hanging from the ceiling), and the rope passes over it, then 100 lbs of force is required. If the rope is fixed to the ceiling and passes under the pulley (which is fixed to the load), then 50 lbs of force is required.
If you have a man submerged up to his neck in corn and you want to know how many pounds of force it will take to lift him out, information about the volume, weight, mass, density would be needed in order to calculate the force needed.
about 100 pounds
50 pounds
if you are thinking of 100 pounds-force, then the answer is: 100 pounds = 444.822 N
Any one in the Newton family can lift over 50 lbs. The youngest is 12 yrs old.
100 pounds on earth surface = 37.8 pounds on mars surface Mass remains the same though.
Yes. Work is measured in foot-pounds, so 300*1 = 100*3 = 300 foot-pounds. ■
30
In a Pulley System, the number of "Supporting Strings" is equal to the Force multiplier of the system. That is, if there are 4 supporting strings (plus the string you pull on), and the object being raised weighs 100 pounds, then the effort you supply is only 25 pounds. The Pulley System has a force multiplier of 4 times the input.
pressure required = force acting / area force acting = 14700 n Area = 3.14* r2 m2 Area = 3.14*( 4.57/100)2 Area = 0.00655 m2 The pressure requird = 14700/0.00655 pascal = 22.44 bar