A tow rope, parallel to the water, pulls awater skier directly behind the boat with constant velocity for adistance of 72 m before the skier falls. The tension in the rope is140 N. (a) Is the work done on the boat by the rope positive, negative, or zero? Explain. (b) Calculate the work done by the rope onthe boat

Q: a block with mass m=20 kg pulled on horizontal surface , bulled by external force by 1000 N as shown…

A: Frictional force=μmg where μ=coefficient of friction m=mass of body Work done by force=F.X where…

Q: What is the work done by the force F? F S1 S2 O Fs None of the above Zero O-Fs

A: Given data:   A force F, towards upward direction The object traveled a distance s Angle between…

Q: 1) A steel ball of mass 5.2 g is fired vertically DOWNWARD from a height hof 18 m with an initial…

A: Given   mass of steel ball = 5.2 g initial speed = vo = 14 m/s    (downward direction) height = 18…

Q: A ski boat moves with constant velocity. Is the net force acting onthe boat doing work? Explain.

A: A ski boat

Q: In 1990 Walter Arfeuille of Belgium lifted a 281.5-kg object through a distance of 17.1 cm using…

A: Mass of the object m = 281.5 kg distance lifted d = 17.1 cm = 0.171 m

Q: Provide an example of a situation that would help explain the concept of "zero work", in regards to…

A: In physics the work may be defined as the dot product of force and displacement. By dot product of…

Q: 1.) A force F = 15xi - 5yj, where F is in Newtons and x and y are in meters. a. Find the work done…

A:

Q: A block of mass 2.50kg is pushed 2:20m along a frictionless horizontal table by a constant 16.0 N…

A:

Q: The horizontal force on the car varies with x as shown in the figure. What is the work done on the…

A: Page 1Figure:

Q: A flight attendant pulls her 64.2 N flight bag a distance of 333 m along a level airport floor at a…

A: Here, we calculate  work, force of friction, and coefficient  of Kinetic  friction  given as follow;

Q: A cable pulls an 382 kg safe up a slope inclined at 10°, for 31 m on an very slippery oily surface.…

A:

Q: A 53.2-kg skateboarder starts out with a speed of 2.33 m/s. He does 85.8 J of work on himself by…

A:

Q: Computation. A construction crane lifts a 415-kg steel beam 180 m vertically into the air with an…

A:

Q: A force F= (4i-3ĵ) N acts on a particle that undergoes a displacement A = (2i +j) m. a) ) Find the…

A:

Q: ETC - CIMS - 1. A student of mass 50 kg caries a bag weighing 4000g from the ground floor to his…

A: The solution is given below

Q: A 5 kg box is pushed 1 m from rest across horizontal ground using a force of 25 N applied at 30°…

A:

Q: The force F = (3i - j) N acts on a particle, causing a displacement of Ar = (3i + 2j) m. Find the…

A: Answer  W=7 J

Q: The force F = (3î - j) N acts on a particle, causing a displacement of ∆r = (3ỉ + 2j) m. Find the…

A: Given: Force F = (3î - j) N Displacement of ∆r = (3ỉ + 2j) m To determine the work done on the…

Q: A cable pulls an 254 kg safe up a slope inclined at 20°, for 32 m on an very slippery oily surface.…

A:

Q: A 50 kg box is pushed 7 m across the floor at constant velocity by a force F= 500 N directed 53…

A: Simple and intersting problem from basic physics. Please have a good look

Q: Identify a case where an object is moving over a surface with friction, but the frictional force…

A: When the object moves in a pure rolling motion, the work done by the friction will be zero.

Q: A man cleaning a floor pulls a vacuum cleaner with a force of magnitude 60 N at an angle 45° with…

A: Work done: A force exerted on the body and total displacement of the body gives work done. Work is…

Q: a-) Determine the work a hiker must do on a 15.0-Kg backpack to carry it up a hill of height…

A: a)Work done by hiker  w=mgh=15*9.81*10=1471.5J b)Work done by gravity  W=-mgh=-15*9.81*10=1471.5J

Q: An 8.5-kg block is pushed along a horizontal rough surface by a 40-N force inclined at 20° with the…

A:

Q: Cite an example wherein  force exerted on a body does no work. Explain.

A: Work done is defined as the product of force, displacement and cosine of angle between force and…

Q: Which of the following statements is NOT true, in regards to force and displacement vectors?…

A:

Q: An Athlete pulls a 20 kilograms crate along Lane A of the storage house. Lane A is a 15m  aisle.…

A:

Q: DIRECTI 1. A force of 5i +j+2k N displaced a body from a position of i+ j+ k m to 2i + 4j+ 6k m. How…

A:

Q: Ffr = 20 N Fapp 200N %D

A: Given, Fapp=200N Ff=20N The net force is in the forward direction (towards Right)=200-20 Net…

Q: A 996 kg car is travelling at a velocity of 15.4 m/s.  How much work must be done on the car by the…

A: Given: The mass of the car is 15.4 m/s. The mass of the car is 966 kg. The final velocity of the car…

Q: Giventhe diaeram Shown, assuming that the Colfficiet of Kinetic friction ig 8.1 What is the…

A: In the system the acceleration will be in the horizontal direction alone , where the horizontal…

Q: A 2-kg car accelerates uniformly from rest to a speed of 10 m/s in the first 5s (frictionless…

A: Given that,Mass of car : m = 2 (kg)At t = 5 (sec), v = 10 (m/sec)Now,Here we can apply the eqn of…

Q: Which do you think requires more work: moving up stairs at a slow speed (ex: walking) or moving up…

A: We know the  formula of work  W= F × S Where F =Force  S= displacement