A 38.0 kg box hangs from a rope. What is the tension (in N) in the rope if the box is at rest? Assume that the local acceleration due to gravity is -9.80 m/s2. What is the tension (in N) in the rope if the box moves up at a steady 5.0 m/s? What is the tension (in N) in the rope if the box has an initial velocity of 5.0 m/s and is speeding up at 5.0 m/s2? What is the tension (in N) in the rope if the box has an initial velocity of 5.0 m/s and is slowing down at 5.0 m/s2?

Q: A lamp hangs vertically from a cord in a descending elevator that decelerates at 1.9 m/s2. (a) If…

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Q: A person stands on a scale inside an elevator at rest (see the figure below). The scale reads W =…

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Q: A 60 kg person stands on a scale in an elevator. How many Newtons does the scale read: a)…

A: (a) When the elevator is ascending, F=mg+ma substituting the givens, F=60 kg9.8 m·s-1+60 kg1 m·s-1…

Q: A 10.0 kg mass hangs on a string with a tension of 126 N, what is its acceleration?

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Q: A child is rolling a ball down a slide to his friend. The ball has a mass of 3 kg, and the slope of…

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Q: A person stands on a scale inside an elevator at rest (see the figure below). The scale reads W =…

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Q: The weight of an astronaut plus his space suit on the Moon is only 279 N. How much (in N) do they…

A: Weight of an object is the force with which the object is attracted towards the Earth. Mass is a…

Q: An astronaut standing on the moon has a mass of 60.0 kg. On the moon, the acceleration due to…

A: Given data:  Mass (m) = 60.0 kg Acceleration due to gravity on the moon g' = 1.60 m/s2, down

Q: Under certain conditions, the human body can safely withstand an acceleration of 10 g. (a) What net…

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Q: SpaceX's Falcon Heavy rocket with a mass of 1.42 x 10^6 kg is launched straight upward at 1.8 m/s.…

A: GIVEN: mass m=1.42×106 kg velocity v =1.8 ms-1 thrust force F =2.65×107N time t= 154 s

Q: A model rocket is fired vertically from rest. It has a constant acceleration of 15.3 m/s^2 for the…

A: The force during the initial 1.5 sec is given by                                F=m*a…

Q: A Christmas light hangs on a series of strings as shown in the figure below. The tension on string…

A: tension on string=0.48 N three angles=42°, 30° & 25°

Q: A sled of mass 50.0 kg is pulled along the flat, snow-covered ground. The static friction…

A: Since you have posted a question with a multiple sub parts, we will solve first three sub - parts…

Q: A rescue helicopter is lifting a man (weight = 822 Newton's) from a capsized boat by means of cable…

A: a)The required tension when the man is given an initial upward acceleration is,

Q: A block is suspended from a pulley and the tension in the rope is 77.5 N (see figure (a)). In figure…

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Q: A student of mass 63.4 kg, starting at rest, slides down a slide 23.2 find the force of kinetic…

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Q: 14. A student apparently weighs 180lb, in an elevator that is accelerating at the rate 5ft/s^2…

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Q: a) The acceleration of the masses? b) The tension in the string on the left side? c) The tension in…

A: Acceleration of Atwood machine can be given as, a=(m2-m1)g/m1+m2      Where,m1=12kg…

Q: A jet aircraft with a mass of 4,375 kg has an engine that exerts a force (thrust) equal to 60,400 N.…

A: a) 13.80 m/sec² b) 69 m/sec c) 172.5 m

Q: The gravitational force exerted on a baseball is -Fg ĵ . A pitcher throws the ball with velocity…

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Q: A soccer ball is in contact with the foot of a player kicking it at an angle of 30o, with a force of…

A: Angle to the horizontal = 30 °  Force applied = F = 200 N  Horizontal component of force, Fx =…

Q: A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.4 m/s2. (a) If…

A: Given          Downward acceleration a=2.4m/s2        Tension in the cord T=89 N

Q: A net force of 3,000.0 N accelerates a car from rest to 37.4 km/h in 5.00 s. (a) What is the mass of…

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Q: A 74-kg person is standing on a scale in an elevator. What is the reading of the scale in newtons if…

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Q: A woman of mass 51.0 kg is standing in an elevator. (a) If the elevator floor pushes up on her feet…

A: SOlution: Given that m = 51 kg F = 408 N v = 1.5 m/s t = 4s

Q: A jet aircraft with a mass of 4,525 kg has an engine that exerts a force (thrust) equal to 60,400 N.…

A: Part A. force is given as follows: F=ma60400=4525×aa=13.348 m/s2   Part B. Final speed after 9 s…

Q: A person of mass m = 55 kg is in an elevator which is accelerating upward at acceleration a= 2.3…

A: Scenario - A man travelling up in a lift feels heavier due to resultant of his weight and…

Q: A 1350 kg elevator moving downwards at 5.31 m/s arrests its motion in 2.10 seconds. What is the…

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Q: A person stands on a scale inside an elevator at rest (see the figure below). The scale reads W =…

A: Given: The reading of the person is 846 N ( when the elevator is at rest)

Q: A 15kg box is being pulled to the right across the floor by a tension force of 25N that is at a…

A: Mass of box (m) = 15 kg Tension force (T) = 25 N θ = 20ofrictional force (f) = 5 N

Q: You want to hang an object from the ceiling of an elevator that has a maximum acceleration of 4.0…

A: Given :T=45 Na=4 m/s2

Q: A boat moves through the water with two forces acting on it. One is a 1,575-N forward push by the…

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Q: A jet aircraft with a mass of 4,375 kg has an engine that exerts a force (thrust) equal to 59,900 N.…

A: Given data:  Mass (m) = 4375 kg Force (F) = 599 00 N Time (t) = 7 s Initial velocity (Vi) = 0 m/s…

Q: A 12 kg block hanging on a string is pulled upward by the string with an upward acceleration of 6.2…

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Q: At the surface of Jupiter’s moon Io, the acceleration due to gravity is g = 1.81 m/s2. A watermelon…

A: The watermelon’s weight at the Earth’s surface is, The gravitational acceleration of Jupiter’s moon…

Q: A physics student, in a stationary elevator, places a 220.0 g mass on an electronic balance. The…

A: Given When elevator is at rest Mass = 220.0 g When elevator accelerated at 'a' (let) Reading = 292.0…

Q: A 60-kg operator is standing on a spring scale in a 600-kg elevator that is accelerating 6 m/s2 up.…

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Q: A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.5 m/s2. (a) If…

A: a)The expression for the mass of the lamp,

Q: A 45 kg box hangs from a rope. What is the tension in the rope if: (a) the box is at rest? (b) the…

A: a. the tension the box is at rest is T=mg=45 kg9.8 m/s2=441 N

Q: The acceleration due to gravity on planet Z is 1.81 m/s^2 A) if a rock weighs 28.0 N at the surface…

A: Answer:-  Given,                          The acceleration due to gravity on planet Z =  1.81 m/s2…

Q: Suppose a 59.0 kg gymnast climbs a rope. a. What is the tension (in N) in the rope if he climbs at a…

A: (a) When gymnast climbs the rope at constant speed, his acceleration and hence the net force on him…

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?”