What causes the force that moves a boat forward when someone rows it?  a. The force is caused by the rower’s arms. b. The force is caused by an interaction between the oars and gravity.  c. The force is caused by an interaction between the oars and the water the boat is traveling in.  d. The force is caused by friction.

Q: 1. When someone is in a head-on collision in a car and stops suddenly, they are thrown forward into…

A: According to law of inertia an object will try to stay in rest or motion unless an external force is…

Q: A 100 N steel ball is suspended from the ceiling using a light rope. The tension in the rope is…

A:

Q: 2. Two forces of magnitudes 4.0 Newtons and 3.0 Newtons pull on a box. The forces make an angle of…

A: Here we have to use Newton's law

Q: Consider the 61.0 kg mountain climber in the figure. 31° Flegs 15° (a) Find the tension in the rope…

A:

Q: A 39.9-kg crate rests on a horizontal floor, and a 70.6-kg person is standing on the crate.…

A: (a)Consider the system of the person, crate and the floor. The forces acting in the vertical…

Q: To give a 19-kg child a ride, two teenagers pull on a 3.7-kg sled with ropes. Both teenagers pull…

A: Given:  Child's mass→mchild=19 kg Sled's mass→msled=3.7 kg Force applied by teenagers→F=55 N Angle…

Q: The resultant of a force system is the force which can replace the original system with out changing…

A: 1) If we take all the point on a single point then the resultant is a force which can replace the…

Q: A 1200-kg car pushes a 2100-kg truck that has a dead battery to the right. When the driver steps on…

A: By using Newton's 2nd and third law, we get:Fnet=(M+m)a......(1)where,Fnet is the net forceM and m…

Q: An automobile engine has a weight, W, whose magnitude is W = 3150 N. This engine is being positioned…

A:

Q: 1. A couple can be defined as A the product of a force and the perpendicular distance from the pivot…

A: Let a force be applied = F Let the distance of the application of force from the pivot point = d

Q: Two ropes are connected to a 200 kg dinghy. Two brothers each take one rope and pull. When the…

A:

Q: 2. Four dogs named Astro, Bam, Clifford, and Don play tug-of-war game with a toy. Astro pulls on the…

A:

Q: 6 نقاط Mass MA = 8 kg rests on top of mass MB = 4 kg that rests on a frictionless table. The…

A:

Q: Unbalanced forces acting on an object cause it to ______________________________________________…

A: Unbalanced forces acting on an object cause it to move or motion Acceleration depends on the net…

Q: 18. A traffic light at an intersection is hanging from two wires of equal length making angles of…

A: Given data:  Length of wires are equal Angle (θ) = 10°, below the horizontal  Weight (W) = 2500 N…

Q: 2. An 8 kg chandelier is suspended from the ceiling by two ropes that make angles of 30 degrees and…

A:

Q: You are on a subway holding yourself off the floor by pulling on an overhead rail. The subway starts…

A:

Q: A 32.3-kg crate rests on a horizontal floor, and a 68.8-kg person is standing on the crate.…

A: Given that a 32.3kg crate rests on a horizontal floor and 68.8kg person is standing on the crate…

Q: 3. A father pulls his child on a sled by pulling on a rope over his shoulder with a force as much as…

A: Given : Fext=75N              θ=30°              f=15N              W=180N   Refer to the free body…

Q: Determine the amount of tension force present in the string if a 75 kg box is being hang on both…

A: Free body diagram gives whole idea of the forces acting. Force brings about motion and changes in…

Q: 14.A horse is hitched to a wagon. Since the wagon pulls back on the horse just as hard as the horse…

A: Solution: Given that the horse is pulling the wagon and at the same time the wagon pulls back, this…

Q: 12) A barge is pulled by two tugboats. If the resultant of the forces exerted by the tug boats is 30…

A:

Q: The force of tension in the cable that is supporting an elevator is 15000 N. If the weight of the…

A: Let w denotes the weight of the elevator, T denotes the cable’s tension, m denotes the elevator…

Q: A boy has filled his toy box with all his favorite toys and it trying to drag it across the floor.…

A: Given Data: Mass of toy box is m= 35 kg Pulling Force F= 24 N Angle with horizontal Q=30° The free…

Q: 5. You need to lower an injured friend down a 4 m wall with the help of your patrol. You need a good…

A: Fireman’s Chair. This is better than a bowline. You can support the back (under the arms) and the…

Q: A man pulls a 100 N box using a rope oriented at an angle of 30° with the horizontal force of the…

A: The FBD of the box is a shown. T is the rope tension.

Q: What is the weight

A: All questions are answered below

Q: 4. The amount of friction between two objects will depend on which of the following? A. The volume…

A: Option B : The nature of the surfaces in contact

Q: 56. A forklift is used to offload freight from a delivery truck. Together the forklift and its…

A: a. The force vector in terms of i and j can be represented as shown below.…

Q: A 44.1-kg crate rests on a horizontal floor, and a 66.9-kg person is standing on the crate.…

A: (a)Normal force exerted by the floor on the crate is,

Q: Four people are pulling on a crate. Two people are pulling to the right and two are pulling to the…

A:

Q: A boy has filled his toy box with all his favorite toys and it trying to drag it across the floor.…

A:

Q: A 55-kg box rests on a horizontal surface. The coefficient of static friction between the box and…

A:

Q: Three cattlemen are handling an unruly calf (Bos taurus). All three have ropes around the calf’s…

A: Given data: The magnitudes of force is, F1=120 N F2=110 N F3=116 N

Q: In an effort to clean between teeth, you used a dental floss. What do you call the force on the…

A: In an effort to clean between teeth, you used a dental floss. We call the force on the floss is…

Q: 6. Complete the following statement: "When the Total Blue Force is NOT EQUAL TO the Total Red Force,…

A: If the  total red force and total blue force are not equal to each other than the net force will be…

Q: LA student presses a 0.5 kg book against the wall. If the µ̟ between the book and the wall is 0.2,…

A:

Q: A Shopee delivery man named lan is dragging a trunk up the loading ramp of the delivery truck. The…

A:

Q: ** 23. Bob and his lazy brother, Will, are working together on a construction site, holding a…

A: Let Fb be the upward force applied by Bob and Fw be the upward force applied by Will on the glass.…

Q: A block resting on a plane inclined at an angle, 0, of 42° from the horizontal is being held in…

A: From free body diagram, equate vertical forces and horizontal forces because system is at rest.

Q: 7 A wheelbarrow is loaded as shown in Figure 4.22. Calculate the force that the person needs to…

A: Given Data : The Weight of the wheelbarrow is given as W = 400 N. The mathematical equation for…

Q: A 32.7-kg crate rests on a horizontal floor, and a 62.0-kg person is standing on the crate.…

A: (a) Newtons second law says that accelaration of an objetc is directly propotional to the net force.…

Q: 4. The sign has a mass of 25 kg. Determine the tension in the cables as shown in the figure below.…

A: Mass of the sign m=25 kg. Let the tension on the strings be T1 and T2 which is what we need to find.…

Q: 23. The diagram below shows a door viewed from above. Much to their parent’s annoyance, two kids are…

A: Force apply by child A= F Distance where child A apply force be =L/3 Distance where child B apply…

Q: 38. A 35-kg crate rests on a horizontal floor, and a 65-kg person is stand- ing on the crate.…

A: Normal force is the upward force exerted by the ground on a weight resting on the ground . The…

Q: 10. In the figure below, a mass of 500 kg is held motionless in the air by a 120-kg boom and a rope.…

A: Given values, mass of boom(M)=500kgmass of rope(m)=120kgθ=30°φ=45°

Q: A certain orthodontist uses a wire brace to align a patient's crooked tooth as in the figure below.…

A: From the figure it can be easily seen that the x-component of the tension cancels out as they are…

Newton's First Law of Motion

If a very smooth ball is rolled down an inclined surface with zero friction, the ball will continue to roll indefinitely for an infinite time, in an attempt to reach to the same height on the opposite hill!