Suppose a 1350-kg elevator car is lifted a distance 41 m by its cable at a constant speed, assuming the frictional force on the elevator has a constant value of 1575 N.
Calculate the work done on the elevator by its cable, in joules.
Calculate the work done by the gravitational force on the elevator, in joules, during this process.
Calculate the total work done on the elevator, in joules.
Suppose a 1350-kg elevator car is lifted a distance 41 m by its cable at a...
(a) Calculate the work done (in J) on a 1450 kg elevator car by its cable to lift it 39.0 m at constant speed, assuming friction averages 145 N (b) What is the work done (in J) on the lift by the gravitational force in this process? (c) What is the total work done (in 1) on the lift?
1. Calculate the work done in kilojoules on a 1,146 kg elevator car by its cable to lift it 42 m at constant speed, assuming friction averages 135.9 N. 2. What is the cost of operating a 4.4 W electric clock for a year if the cost of electricity is $0.08 per kWh ? 3. Find the final speed for a skier in a downhill ski race who skies 80 m along a 24.7ยบ slope neglecting friction if he or...
help with part 5 1. A 125-kg load is lifted 12.0 m vertically with an acceleration a -0.32g by a single cable. Determine: (a) the tension in the cable, (b) the net work done on the load, (c) the work done by the cable on the load, (d) the work done by gravity on the load, and (e) the final speed of the load assuming it started from rest. 2. A 1.60-m tall person lifts a 2.10-kg book from the...
A cable lifts a 1300-kg elevator at a constant velocity for a distance of 35 m. What is the work done by each of the following?
Question 5.2a: A 1350-kg car is traveling with an initial speed of 26.0 m/s. Determine the car's speed after ?2.15 ? 105 J of net work is done on the car. m/s Question 5.2b: A 11.6-kg box is sliding across a horizontal floor. It has an initial speed of 1.40 m/s and the only force acting on it is kinetic friction with magnitude fk = 3.00 N. Determine the distance the box will travel before coming to rest. m
An elevator car with a mass of equal to 800 kg is pulled upward at constant speed. If the elevator moves a distance of 5m, how much work was done by the cable which pulls upward on the elevalor through that distance. 12 vg40000 The cable does no work, because there is no change in kinetic energy B. The cable does 40,000 J of work, because it must be equal to gain in potential energy The cable does more than...
A box initially at rest of 15kg is lifted with a cable a distance d 570m on a frictionless surface at a height h = 2.50 m, where it stops. a) How much work is done by the force of gravity during the survey? (10 points) b) How much work is done by the tension force? F4 FS
An elevator cable breaks and the 1550 kg elevator drops 30 m onto a large spring at the bottom of the shaft. The stiffness of the spring is k = 90, 000 N/m. Calculate the kinetic energy and velocity of the elevator after falling the 30 m distance. Find the distance of maximum compression of the spring. Determine the maximum acceleration of the elevator. What is the fastest velocity reached by the elevator during the fall?
A cable lowers a 1400 kg elevator so that the elevator's speed increases from zero to 4.0 m/s in a vertical distance of 5.6 m . What is the force that the cable exerts on the elevator while lowering it? (Assume that the system is the elevator and Earth.) What is the force that the cable exerts on the elevator while lowering it? (Assume that the system is the elevator only.)
A 270-kg load is lifted 24.0 m vertically with an acceleration a=0.170 g by a single cable. a. Determine the tension in the cable. b. Determine the net work done on the load. c. Determine the work done by the cable on the load. d. Determine the work done by gravity on the load. e. Determine the final speed of the load assuming it started from rest.