As shown, a worker pushes a load of 500 N onto a platform with a force of 180 N by using an inclined plank. The 180N force is parallel to the inclined plank. The plank is 3 m long and the platform is 1 m above the ground.
a. Find the potential energy gained by the load.
b. Find the work done by the worker.
c. Find the energy wasted during this process.
d. Hence, calculate the frictional force along the plank.
Answers: 1
Physics, 21.06.2019 23:20
In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.
Answers: 1
Physics, 22.06.2019 01:50
Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.
Answers: 2
Physics, 22.06.2019 08:00
Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance
Answers: 3
Physics, 22.06.2019 11:30
Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.
Answers: 2
As shown, a worker pushes a load of 500 N onto a platform with a force of 180 N by using an inclined...
Mathematics, 18.10.2019 16:10
Biology, 18.10.2019 16:10
History, 18.10.2019 16:10
Advanced Placement (AP), 18.10.2019 16:10
Mathematics, 18.10.2019 16:10
Computers and Technology, 18.10.2019 16:10
Mathematics, 18.10.2019 16:10
Mathematics, 18.10.2019 16:10
Geography, 18.10.2019 16:10
History, 18.10.2019 16:10