When the athlete holds the barbell overhead, the reaction force is the weight of the barbell on his hand. How does this force vary for the case in which the barbell is accelerated upward? Downward?

Q: and a 20.-newton force due east act concurrently on an object, as shown in the diagram below. North…

A: given F1= 20 N, north x- component of F1                          F1X= 0 and F1y= 20 N F2= 20 N,…

Q: An object with a mass of 7.5 kg accelerates 8.3 m/s? when an unknown force applied to it. What is…

A: According to Newton's 2nd Law:   F = ma                                 ...... (1)               (…

Q: A rock is suspended from a string; and it accelerates upward. Which statement is true concerning the…

A: The net force is given by the Newton's second law.  Net force = mass x acceleration

Q: Two boxes with masses M1 = 10 Kg   and  M2 = 15 Kg, connected with a massless string are placed on a…

A:

Q: If you know all of the forces acting on a moving object, can you tell in which direction the object…

A: Several forces acting on a body

Q: If not act any forces on a body, this means the body at rest. O False O True

A: Given  The statement is  if not act any forces on a body, this means the body at rest.

Q: As shown below, if M = 5.50 kg, what is the tension in string 1?

A:

Q: A plum bob hangs from the roof of a railway coach. What angle will plum line make with vertical when…

A:

Q: What acceleration will result when a 12 N net force applied to a 3 kg object?A 6 kg object

A:

Q: Does it matter which force we call the action and which force we call the reaction?…

A: According to Newton's third law of motion, Whenever two bodies interact with each other, the force…

Q: A woman resting on ice, with mass 50.3 kg was pulled by a man with force F at 35 degrees above…

A: According to the equation of motion, the acceleration of the object is,…

Q: Is normal force always equal to weight of an object

A:

Q: Why is it harder to push a steady object in comparison to push a constantly moving object?

A: For a steady object, static friction is zero. If we push it, due to Newton's Second Law there is an…

Q: How to I calculate force from my compression spring ping pong ball launcher

A:

Q: Give an example when a single force cannot replace two forces acting on a body?

A: A single force can only be able to replace two forces if they are intersecting. If two forces that…

Q: You are trying to push your stalled car. Although you applya horizontal force of 400 N to the car,…

A: The forces acting on the car in the horizontal direction are the force exerted by the person pushing…

Q: If the acceleration of an object is zero,are no forces actingon it? Explain.

A: The acceleration of the object is given as a=0

Q: What happens when a person pulls upward on a box with a mass of 10.0Kg  with a force equal to or…

A: Write the given values with suitable variables. m=10 kgFp=100 N Here, m denotes the mass and…

Q: Two people are pulling on a toboggan. One person is pulling directly north with a force of 75 N…

A:

Q: Two boxes, A and B, are connected by an ideal (massless) cord and are resting on a smooth…

A: Consider, The mass of the box A, mA  =  12 kg The mass of the box B, mB  = 10 kg The horizontal pull…

Q: If the acceleration of an object is zero, are no forces actingon it? Explain

A: When the acceleration of an object is zero, then the net external force acting on the object is…

Q: A resultant force of 20 N gives a body of a mass m an acceleration of 8.0 m/s2, and a body of mass…

A: The resultant force F = 20 N. The acceleration of the mass m is a = 8 m/s2. The acceleration of the…

Q: An object with a mass of 7.5 kg accelerates 8.3 m/s? when an unknown force is applied to it. What is…

A: According to Newton's 2nd Law:   F = ma                                 ...... (1)…

Q: A body cannot exert a force on itself. This statement is a direct consequence of Newton's

A: A body cannot exert a force on itself.

Q: A man pushes the C 0ON Jadder horizontally as in order to prevent it from sliding. Neglect the shown…

A: We know that the body under multiple forces can have equilibrium position under the following…

Q: Suppose there is a box of books with a mass of 10 kg resting on a flat horizontal table, and What is…

A: Given:- The  mass of the box of books m = 10 kg  The coefficient of the static friction between the…

Q: 108. Shown below is a 10.0-kg block being pushed by a horizontal force F of magnitude 200.0 N. The…

A:

Q: A 500-N object is to be given an acceleration of 0.5 m/s2. How large an unbalanced force must act…

A: Determine the mass of the object.

Q: object with a mass of 5.0 kg accelerates 8.0 m/s? when an unknown force is applied to it. What is…

A:

Q: What three forces are present as a basketball is tossed upward into a hoop? push, weight,…

A: To identify the three forces present as a basketball is tossed upwards into a hoop

Q: What are some differences between the forces acting on a person when they are doing a squat vs a…

A: SQUAT:- Squatting is a popular exercise that targets the muscles in the legs, lower back, and core.…

Q: Three different forces act on an object. They are: F1= F2 = Find the net force Fnet on the object…

A:

Q: orizontal force of 90N was needed to keeps an object weighing 250N sliding at constant speed 30 m/s…

A: Given values:- Horizontal force,(F)=90 N ----(1) Weight of the object,(W)=250 N ----(2) Constant…

Q: Two blocks, joined by a string, have masses of 6.0 and 9.0 kg. They rest on a frictionless…

A: The tension in the string between the blocks is 12 N i.e. option (c) is correct.

Q: Find the acceleration of themasses Find the tension T in thecord.

A:

Q: How much force would a car’s tires need to provide to accelerate an 1800 kg car at a rate of 4.0…

A:

Q: If an object is NOT accelerating, then the forces acting on the object are?

A: Given data The acceleration is a=0   The net force on the object is, Fnet=ma=m0=0 Here m is mass of…

Q: A warehouse worker applies a force F to accelerate two crates, mд and mp, to the right along a rough…

A: Since the floor is rough, the force on the two crates depends upon the friction of the floor.

Q: If I were to push a cart in the grocery store, which force would I be supplying to the cart? Would…

A: To push a cart in the grocery store the forces supplying to the cart will be Applied external force…

Q: What is the net force experienced by a 2N object sitting on a table with a 5 N object on top of…

A: Consider the free-body diagram for the given objects as follows.

Q: What happens when a person pulls upward on a box with a force equal to or greater than the box's…

A:

Q: You’re exploring a cave. Standing in a low cavern, you steady yourself by pushing straight up on the…

A: When we stand  in a low cavern exploring a cave and steady ourselves by pushing straight up on the…

Q: If the apparent weight of a man is 840 N when the elevator that moves downward with acceleration 4…

A: Given Data " The weight of the man when the elevator moves down is given as W = 840 N. The…

Q: Two forces F1 and F2 act on a 5.00 kg object.If F1 20.0N and F2 15.0N, find the acceleration in (a)…

A:

Q: Two blocks of masses 20 kg and 8 kg are connected together by a light string and rest on a…

A: Given:- m1= 8 kg = mass of block-1 m2= 20 kg = mass of block-2 a= acceleration of the system= 0.5…

Q: Two people are pulling on a toboggan. One person is pulling directly north with a force of 75 N…

A:

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!