A 93 kg student climbs 4 steps of 20 cm each. What is the work performed to climb the steps?
A 93 kg student climbs 4 steps of 20 cm each. What is the work performed...
If a 25 kg child climbs two steps of 20 cm each, the work performed is: Select one: a. 100 Nm b. 10,000 Nm c. need more information to calculate d. 1000 Nm e. 10 Nm
A 100kg person climbs a 170 cm flight of stair in 1.4 second find the work done to climb the stairs and the power of the person in watts.
a 65-kg man goes on a hike and climbs 110m high hill. (a) What is the increase in the gravitational potential energy of the man? (b) Where does this energy come from? (c) The man's body is 20 percent efficient; that is, for every 20 J that are converted to mechnical energy, 100 J of chemical energy are expended, with 80 J going into thermal energy. How much chemical energy is expended by the man during the climb?
Q2. A 65-kg hiker climbs to the top of a mountain 4200 ml The climb is made in 4.6 h starting at an elevation of 2800 m. Calculatoe (i) The work done by the hiker against gravity (ii) The average power output in watts and in horsepower, and (ii) Assuming the body is l 5% efficient, what rate of energy input was required.
A student of mass 47.3 kg climbs up the stairs in the Physics Department, with a vertical height change 3.2 metres. What is the change in gravitational potential energy? Give your answer in Joules, to 2 significant figures
A 148 kg student eats a 200 Calorie doughnut. To “burn it off”, he decides to climb the steps of a tall building. (1 food Calorie = 103 Calories.) How high would he have to climb to expend an equivalent amount of work? The accelera- tion of gravity is 9.8 m/s2 . Answer in units of m.
A boy, 35 kg, climbed up 20 steps, each step 0.25 m. It took him 8.9 seconds to complete the fight of stairs. How much power did the boy require to climb the stairs? a. 192.9 W b. 771.6 W c. 19.7 W d. 78.7 W
A woman climbs a ladder against the side of the building and wants to climb 3/4 of the way to the end of the ladder. What is the minimum coefficient of friction needed to keep the ladder from sliding out from under her? The mass of the ladder is 11.6 kg, and its length is 8.95 m, the mass of the woman is 36.5 kg, and the ladder makes an angle of 0 =57.6º do the ground as is shown...
lstolyBookmarksWindow Help a que Question Your An 18 kg person climbs up a uniform ladder with negligible mass. The upper end of the ladder rests on a frictionless wall. The bottom of the ladder rests on a floor with a rough surface where the coefficient of static friction is 0.25. The angle between the horizontal and the ladder is θ . The person wants to climb up the ladder a distance of 2.6 m along the ladder from the ladder's...
a 92 kg person uses 2.0m steps for exercise. how much energy does it take to climb each step . what is the power needed if it takes 0.50s time for each step to climb?