How much work does an elevator motor do to lift a 1800 kg elevator a height of 100 m ? Express your answer with the appropriate units. Wext = Value Units Submit Request Answer - Part B How much power must the motor supply to do this in 57 s at constant speed? Express your answer with the appropriate units.

The two ropes shown in the bird's-eye view of the figure are used to drag a crate 5.8 m across the floor. How much work is done by the force fk→?Express your answer with the appropriate units. How much work is done by the force T1→?Express your answer with the appropriate units. How much work is done by the force T2→?Express your answer with the appropriate units.

The mass of an elevator cab, including passengers, is 3.1 x 103 kg. It moves 180 m up the elevator shaft in 21 s at constant speed. What is the average rate of work done by the cable on the elevator cab? Your answer should be in kJ/s (= kilowatts, abbreviated kW) Question Help: Read Submit Question kW

A 700 kgkg elevator accelerates upward at 1.4 m/s2m/s2 for 14 mm, starting from rest. A. How much work does gravity do on the elevator? Express your answer with the appropriate units. B. How much work does the tension in the elevator cable do on the elevator? Express your answer with the appropriate units. C.What is the elevator's kinetic energy after traveling 14 mm? Express your answer with the appropriate units.

Physics help! what is the work Wn done on the box by the normal force? so find Wn=____J   * hint given background information  "the work Ww done in the box of weight of the box is Ww= 1.8 J"   next find the work of Wfk done on the box by the force of kinetic friction? give your answer in: Wfk=___J     i have attached supporting details at the bottom.

▼ Part A How much work must you do to push a 10.0 kg block of steel across a steel table (uk = 0.60) at a steady speed of 1.20 m/s for 5.20 s? Express your answer with the appropriate units. View Available Hint(s) Wp push = Submit Part B P = Submit Value What is your power output while doing so? Express your answer with the appropriate units. ► View Available Hint(s) HÅ μÅ Value Units Units ? ?

A system of two objects has AKtot = 7 J and AUint = -4 J. Part A How much work is done by interaction forces? Express your answer in joules. IVE ΑΣΦ Wint = Submit Part B How much work is done by external forces? Express your answer in joules. V—| ΑΣΦ Wext= = Request Answer Submit Request Answer ? ? J J

If a ski lift raises 150 passengers averaging 690 N in weight to a height of 126 m in 45.9 s, at constant speed, what average power is required of the force making the lift? Number i 270096 eTextbook and Media Units W

Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.2×106 N, one an angle 16° west of north and the other an angle 16° east of north, as they pull the tanker a distance 0.76 km toward the north. Part A What is the total work they do on the supertanker? Express your answer in joules. VE ΑΣΦ W = ?

Which of the following statements are true? Select all correct.   Question 3 options:   If an object speeds up, then the total work done on the object was positive.   If an object moves at a constant speed, then the work done by each individual force is zero   A force must be parallel to the displacement to do any work.   If a force is perpendicular to displacement, it does zero work.   If a force has a component in the opposite direction of the displacement, it does positive work.   If an object doesn't move, then the work done by every individual force must be zero.