An elevator is hoisted by its cables at constant speed. Is the total work done on the elevator positive, negative, or zero? Explain.
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An elevator is hoisted by its cables at constant speed. Is the total
work done on the elevator positive, negative, or zero? Explain.
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- A 1350-kg car is traveling with an initial speed of 25.0 m/s. Determine the car's speed after -2.20 × 10° J of net work is done on the car. X m/s2. A cart is pulled a distance D on a flat, horizontal surface by a constant force F that actsat an angle θ with the horizontal direction. The other forces on the object during thistime are gravity (Fw), normal forces (FN1) and (FN2), and rolling frictions Fr1 and Fr2,as shown below. What is the work done by each force?X A 10 Kg object is raised to a height of 2m in 5s. What is the rate of work done? * 10 W- 10 メ 10 -100 15 O 20 - 1000 40
- A 6.50 kg box slides 4) from the top of a ramp to the bottom at a constant speed, as shown in the diagram. constant v= 1.50 m/s h= 1.85 m 0= 28.2° a) How much work is done on the box by the frictional force? b) How much work is done on the box by gravity? c) How much work is done on the box by the normal force? d) What is the coefficient of kinetic friction between the box and the ramp?Your answer is partially correct. A floating ice block is pushed through a displacement d 27.0 m Ji - (24.0 m )j along a straight embankment by rushing (298 N )i – (183 N ) water, which exerts a force on the block. How much work does the force do on the block during the displacement? Number i 3654 Units% Consider a situation where you carry a 20-N box up a flight of stairs, raising its elevation by 5 m. 5 The work you do is 4 J. 15 True O False O Bi 89 6 X 7 18 ASUS 8 A 19 9 f10 fll f12 pau bre
- A 11 g particle is moving to the left at 17 m/s. How much net work must be done on the particle to cause it to move to the right at 45 m/s ? Express your answer to two significant figures and include the appropriate units. µA ? W = Value Units Submit Request Answer Provide Feedback Next >Please see attached image for question. Thank youA spaceship is launched vertically upward. The total work done on the spaceship is: A: positive B: negative C: cannot be determined with the information given D: negative at the beginning, and then zero as the space shuttle moves upward
- 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.What is the correct answer for this? I answered triple but it is WRONG. Please provide an explanation for this. Thanks much!A force F=(4- 3N acts on an object as it moves in the x direction from the origin to S. The work done on the object by the force is Select one: а. 50 J b. 42 J С. 36 J d. 28 J