Which statement about work is true? a. A force can only do work if it points in the same direction as the displacement. b. The component of a force perpendicular to the displacement does positive work.      c. Only the net force on an object does any work. d. Only the component of a force parallel to the displacement does work.

Q: 1. The force on an object varies according to the position of the object as shown on the graph. a)…

A: The work-done is nothing but the area under the force (F) and displacement (x) graph. The area below…

Q: Why is work a dot product of force and displacement, and not a cross product

A: Work is scaler quantity which has only magnitude, no direction.  Force and displacement are vector…

Q: ndicate if WORK IS DONE or NO WORK IS DONE on the following situation. 1. A girl walking up the…

A: Given: indicate if WORK IS DONE or NO WORK IS DONE on the following situation. 1. A girl walking up…

Q: Q1. A force of 7N as on an object. The displacement is, say 8 m, in the direction of the force. Let…

A: Work done on an object is given by the formula, Work done = (Force)(Displacement), where the…

Q: The net work done on an object may be determined by a combination of kinematics and dynamics or by…

A: mass =14.5 g= 14.5 ×103 kg  length = 73.5 cm= 0.735m speed = 825 m/s.

Q: 1) A woman does 150 J of work to move a table 2 m across the floor. What is the magnitude of the…

A: Note :As per our guidelines we are supposed to answer only one question . Kindly repost other…

Q: When released, a 120-g block slides down the path shown below, reaching the bottom with a speed of 4…

A: Solution:-

Q: . Jordan is 32kg and walks up stairs. She travels a vertical distance of 2 meters. Determine how…

A:

Q: A horizontal rope with 15 N tension drags a 25 kg box 4.0 m to the left across a horizontal surface.…

A: (A)   Calculate the work done by the tension, as below. The tension in the rope and the displacement…

Q: 1) Your car broke down, so you tie a rope to your car and pull the car with constant force to the…

A: Let the force exerted in each case be = F Therefore, work done = F.d Cos(theta)   a) Put theta = 0…

Q: A Farmer hitches her tractor to a sled loaded with firewood and pulls it a distance of 20m along…

A: (a) Given The weight of the tractor is W=14700 N. The force exerted on the tractor is F=5000 N. The…

Q: 2. Study the energy-diagram below and do the following: (a) Label the parts (b) Identify the total…

A: Mechanical energy is sum of kinetic and potential energy.

Q: Nellie Newton does work on a box by pushing it with a constant force of 100 N over a distance of 4…

A: Assume that Nellie Newton does a work by pushing a box with a constant force F = 100 N over a…

Q: A force acts upon an object at a 90-degree angle to the direction that it is moving. This force is…

A: The work done is the product of the force and the displacement of the object.

Q: A man returning from ice fishing trip pulls a sled with fish. Total mass of the sled and fish is…

A:

Q: 1. An Eskimo returning from a successful fishing trip pulls a sled loaded with salmon. The total…

A: (a) Find the amount of work done on the sled. W=Fdcosθ=1.20×102 N5.0 mcos0°=6×102 J=600 J

Q: 10. A box has a weight of 150 Newtons. The force of friction on the box is 50 Newtons if it is…

A: We are allowed to help with one problem at a time, so i am going to help you with question number…

Q: A person pulls a toboggan for a distance of 29.6 m along the snow with a rope directed 22.1 ° above…

A:

Q: ents took turns applying a force to an object in a physics lab. The graph below shows the force…

A: Four students took turns applying a force to an object in a physics lab. The graph below shows the…

Q: 3. A certain force applied on an object is depicted below. (a) What is the work done by the force…

A:

Q: There is a 100 kg box that starts at rest. a person pushes that box over the course of 18 meters…

A: Given mass of box m = 100 kg initial speed u = 0 m/s final speed v = 10 m/s displacement x = 18 m…

Q: A bullet with a mass of 14.5 g is accelerated along the length of a 73.5 cm long rifle barrel from…

A: The given mass of the bullet is m =14.5 = 0.0.145 kg Velocity of the bullet at the time of bullet…

Q: Q7. You push a 100-kg file cabinet up on a ramp with a force of 500 N, your push force is parallel…

A:

Q: Greetings and thank you for your help   2. Give an example of a situation in which there is a force…

A:

Q: A 5.00 gram bullet moving horizontally with a speed of 400 m/s collides with a wooden block. After…

A:

Q: In 1990 Walter Arfeuille of Belgium lifted a 281.5 kg281.5 kg object through a distance of 17.1…

A: mass, m = 281.5 kg  distance, h = 17.1 cm = 0.171 m

Q: ) How much work do you do if you carry a 100 N backpack up a flight of stairs with a height of 5 m?…

A: FORCE=100n DISPLACEMENT=5M work done by you=(force)(displacement)=100 X 5m=500J (ANSWER)

Q: 1. Two physics students, A and B are in the weightlifting room. Student A lifts the 100-N barbell…

A: Two students lift weight . Student A lifts 100 N 10 times in 1 minute . Student B lifts 100 N 10…

Q: Question 3: a. Ina roller coaster the ride includes a vertical drop of 120 m. Suppose that the…

A:

Q: 4. Explain why we need to go understand the dot or scalar product before learning the concept of…

A: Work done: When an object is displaced by a force in the direction of it's application then the work…

Q: It takes a force of 825 N to push a car through terrain. Two students push the car 35 m. a. How…

A: Given data The force required to push the car is F = 825  N The distance pushed by the student is s…

Q: In a roller coaster the ride includes a vertical drop of 120 m. Suppose that the coaster has a speed…

A: Law of conservation of energy: In a system, energy is conserved, which means that the total energy…

Q: Q4] a-How much work is done by the horizontal force F1-150N on the 20 Kg block when the force pushes…

A: BY Work energy theorem, External work= change in P.E                                       +…

Q: 1. The force on an object varies according to the position of the object as shown on the graph. a)…

A: Concept The area under the F vs x graph gives the work done by the force. When both x and F…

Q: When a 0.0577-kg golf ball takes off after being hit, its speed is 42.6 m/s. (a) How much work is…

A: work done by on the ball equals the change of energy of ball.

Q: How much work was done by a machine that exerts a 5000 N force to compress a 10-meter-long steel bar…

A:

Q: When released, a 120-g block slides down the path shown below, reaching the bottom with a speed of 4…

A: Given Mass of block = m = 120 g = 0.12 kg Initially block is at rest Finally block has a speed = 4…

Q: 1. If you try to move a heavy anvil for 10 minutes but cannot make it move, have you done any work…

A: 1)duration of time for which the heavy anvil is tried to move = 10 minutes

Q: Suppose a box on a frictionless ramp is being pulled by a rope with a tension of 350 N making an…

A: Given: tension in rope T = 350 N angle rope makes with horizontal θ=50o angle of inclination ϕ=20o…

Q: 1. An Eskimo returning from a successful fishing trip pulls a sled loaded with salmon. The total…

A: Given data: The total mass of the sled and salmon is, m = 50.0 kg Eskimo exerts a force of magnitude…

Q: A person pulls a toboggan for a distance of 33.7 m along the snow with a rope directed 21.2° above…

A: Given Data: Distance covered, Rope inclination angle,   Tension,

Q: If we know that a force of 5 N acts on an object while it moves 2 meters, can we calculate how much…

A: Force exerted on an object = 5 N Distance moved by object = 2 m

Q: 1. Before beginning its initial descent, a roller coaster car is always pulled up the first hill to…

A: Solution:The work done by the chain is given as:W = Fd cosθ    - 1where, F is the force,…