A 72.0-kg person stands on a scale in an elevator. What is the apparent weight in each of the following situations? (a) when the elevator is accelerating upward with an acceleration of 1.40 m/s2  N (b) when the elevator is moving upward at a constant speed  N (c) when the elevator is accelerating downward with an acceleration of 1.50 m/s2  N

Q: Object feels weightless because ?    A. Gravity is not acting on the object , B. Gravity does not…

A:

Q: A man weighing 800 Newtons is standing in an elevator. If the elevator rises with an acceleration of…

A: Weight of person , W = 800 N  Acceleration of elevator , a = 0.5 m/s2  Mass of person , m = W/g  g…

Q: A 12-kg crate rests on a horizontal surface and a boy pushing it with a force that is 30° below the…

A: Given: Mass of the crate, m = 12 kg. Angle of pushing, θ=30°. Coefficient of static friction, μ=0.4.…

Q: f. An object is accelerating at a rate of 8 m/s' when it suddenly has the net force exerted upon…

A: Since we only answer up to three sub-parts, we will answer the first three. Please resubmit the…

Q: A person who normally weighs 700 N is riding in an elevator that is moving upward but slowing down.…

A: Since the elevator is moving upward but slowing down that means the person standing in the elevator…

Q: You are standing in an elevator in a tall building. Your mass is 65 kg. The elevator starts at t = 0…

A: Given Position y(t) = (0.75 m/s2)t2+(0.10 m/s3)t3 Time t = 4.0 s mass m = 65 kg

Q: Now that you have tension, focus on the forces acting on the apple. Considering that the apple is…

A: In this question they said that we have tension, focus on the forces acting on the apple.…

Q: A mass m1 = 6.4 kg rests on a frictionless table. It is connected by a massless and frictionless…

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Q: uppose you have a 109-kg wooden crate resting on a wood floor. (?k = 0.3 and ?s = 0.5) (a) What…

A: Given: The mass of the crate is 109 kg. The coefficient of static friction is 0.3. The coefficient…

Q: A hot air balloon is accelerating upward. Which of the following is true? A) The bouyant force is…

A: A hot air balloon accelerating upwards has a lift force greater than its weight , the lift is due to…

Q: A block of weight 75N is on a inclined surface with angle of 18⁰ with the horizontal. what is its…

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Q: A block weighing 100N is being pulled along the horizontal plane by a force P having the slope of 5…

A: Weight, W=100 N Co efficient of friction, fk =0.25 Net acceleration required, a=2.5 m/s2

Q: A box is being pushed across a horizontal floor. If the net force (Fnet) is 1000 N and the box…

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Q: A man weighs a fish with a spring scale attached to the ceiling of an elevator. While the elevator…

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Q: A 3-kg box is on a rough horizontal surface. An external force F is applied horizontally to the box.…

A: Answer is Option (b) The expression for find magnitude of acceleration of the box is a=Fm

Q: A 79.8-kg person stands on a scale in an elevator. What is the apparent weight when the elevator is…

A: Real weight = mg = 79.8 × 9.8 = 782.04 N Apparent weight is represented by Normal force acting on…

Q: 5.50 kg crate is suspended from the end of a short ertical rope of negligible mass. An upward force…

A: Given: Mass of the crate, m=5.5 kg Position of the crate, y(t) = 2.80t+0.610t3  find: The magnitude…

Q: (14 pt) The figure shows the velocity graph of a 60. kg passenger in an elevator. (a) Assuming a…

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Q: A 10 kg box is rests on the table and starts to move if 350 N horizontal force is applied to it.…

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Q: 11. A box sits on a ramp inclined at 21.7° with respect to horizontal. If the normal force on the…

A: Given data: Inclined angle θ=21.7° Force F =20.94N

Q: A 87.0-kg person stands on a scale in an elevator. What is the apparent weight in each of the…

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Q: If gravity pulls you down toward the center of Earth with a force of 500 N, how much upward force…

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Q: Alex is asked to move two boxes of books in contact with each other and resting on a frictionless…

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Q: A body hangs from a spring balance supported from the roof of an elevator. If the elevator has an…

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Q: Q.10 A worker pushes an object of 20 kg down on a rough inclined plane with a force F as shown mass…

A: solution is given by

Q: At an instant when a soccer ball is in contact with the foot of the player kicking it, the…

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Q: A man weighing 800 Newtons is standing in an elevator. If the elevator rises with an acceleration of…

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Q: The apparent weight of the body becomes zero in which of the following cases in the elevator? [A]…

A: The apparent weight of the body becomes zero during free fall of a body under gravity in an…

Q: Two blocks connected by a light string are being pulled across a frictionless horizontal tabletop by…

A: Given : mA =2 kg mB=1 kg mC=16.79.8=1.704 kg Here we will note that since the string is always tight…

Q: 1. An object on a rope is lowered at constant speed. Which is true? A. The rope tension is greater…

A: Since object on rope is lowered at constant speed therefore acceleration will zero

Q: What is the apparent weight of a 65 kg person standing in an elevator that is accelerating upward at…

A: Expression of apparent weight of a person in an elevator that is accelerating upward -…

Q: A 5-kg box is on a rough horizontal surface. An external force F is applied horizontally to the box.…

A: When F = 4 N force is applied than the box is moving with the constant speed that means the…

Q: Consider a person standing on a scale in an elevator. If the elevator accelerates upwards with an…

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Q: The distance between two telephone poles is 50.0 m. When a 1.00-kg bird lands on the telephone wire…

A: Given: Mass of bird (m) = 1.0 kg. Sagging (d) = 0.2 m. Angle of dip = θ Length of string (l) = 50.0…

Q: 1. The distance between two telephone poles is 50.0 m. When a 1.00-kg bird lands on the telephone…

A: Given: Distance between telephone poles  = 50 m            mass of the bird  (M) = 1 Kg…

Q: Two forces F1 and act on a 9.40-kg object. F1 = 40.0N and F2 = 12.0 N. 90.0° 60.0° m m a (a) Find…

A: Use Newtons second law,ΣF→ = m xa→⇒a = ΣFm  = 40i +12j9.40⇒ a = 4.255 i + 1.2765 jSo, magnitude =…

Q: An 800 kg elevator is going down and accelerates at 2.0 m/s^2. Find the tension (Newton) in the…

A: Given data-     mass of an elevator (m)= 800 Kg   accelerating downward with the acceleration (a) =…

Q: A person of weighing 0.83 kN rides in an elevator that has an upward acceleration of 0.8 m/s2. What…

A: The weight of the person W=mg=0.83 kN=830 N Where m is the mass of the person and g is the…

Q: At an instant when a soccer ball is in contact with the foot of the player kicking it, the…

A: Mass of ball m = 0.48 Kg X component of accl ax = 830 m/s² Y component of accl ay = 720 m/s² Fnet =…

Q: A horizontal force F pushes a block mass m=4kg against a vertical wall. If the coefficient of…

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Q: Two blocks each of mass 5 kg are fastened to the top of an elevator as in Figure P4.21. (a) If the…

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Q: M F2 124 N at a downward angle 0 You are pushing a block with force F1 from the horizontal and your…

A: The force due to kinetic friction experienced by a body in motion is given by Ff = μkN, where μk =…

Q: A 83.2 kg person is standing inside an elevator. The elevator is moving upward at 2.54 m/s and is…

A:

Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”