A ball of 23 g hangs from the roof of a freight car by a string. When the freight car begins to move, the string makes an angle of 35 degrees with the vertical (see figure). If the force of weight due to gravity points down the page and if we use 9.80 m/s2 for the local acceleration due to gravity. (a) What is the acceleration of the freight car (in m/s2). What is the tension in the string (in N)?

Q: A physics student, in a stationary elevator, places a 250.0 g mass on an electronic balance. The…

A: Given  mass (m) =250.0 g balance reading (mb)=262.0 g Required acceleration of elevator (a)=?

Q: A kangaroo with a mass of 63 kg is standing on a scale in an elevator.  As the elevator rises, the…

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Q: Suppose you hang a 1.0 kg mass from a spring scale. But this time, instead of holding your hand…

A: Step 1:Given:The mass of the object: m=1.0 kgThe acceleration of the mass: a=5.2 m/s2,…

Q: 5. If you reduce the applied force on an object by 4, what do you think will happen to the…

A: Write the expression for Newton’s law.

Q: A 314 kg elevator accelerates upward 4.7 m/s/s. What is the tension in the cable supporting it?

A: Given Mass if elevator is 314 Kg Accelaration is 4.7 m/s² upward Tension in cable is T (say)

Q: A student's true weight is 407 N (magnitude), and apparent weight at a certain time is 515 N…

A: Given value--- true weight = 407 N. apparent weight = 516 N. We have to find--- Acceleration?

Q: Bob pushes on a frictionless cart of mass 6.8 kg and the cart has an acceleration of 1.2 m/s2. If…

A: Mass, m = 6.8 kg Acceleration, abob = 1.2 m/s² Acceleration, abill = ?

Q: The block has mass m = 6.8 kg, the ramp is at an angle of θ = 28 degrees, the coefficient of kinetic…

A: We have a mass of m=6.8 kg moving up a ramp at an angle 28o and the ramp has a coefficient of…

Q: brenda pushes a box horizontally with a force of 200 N (F=200N).  The mass of the box is 50 kg.…

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Q: A 151 kg crate is placed on an adjustable inclined plane. If the crate slides down the incline with…

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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 rock (weight 25 N) is suspended from a cable attached to the ceiling of a moving elevator. If the…

A: Weight of rock W = 25 N  Tension in cable T = 18 N We need to find acceleration of elevator.

Q: Two   blocks  are  connected  via  a  pulley,  both  blocks  have  a  mass  of  10.kg.  One  block…

A: The net force is mass multiplied by acceleration or rate of change of momentum. The SI unit of force…

Q: You hang a 1.0 kg mass from a spring scale. Instead of holding your hand still so that the…

A: The spring scale, when held still, uses the acceleration of gravity to measure the object's weight.…

Q: Bob pushes on a frictionless cart of mass 12.5 kg and the cart has an acceleration of 11.3 m/s². If…

A: According to Newton second law F= MA HERE F is applied force M is mass of object A is acceleration…

Q: A skydiver weighing 204 lbf (including equipment) falls vertically downward from an altitude of 4000…

A: a) When the skydiver falls downward, the weight will act in the downward direction and the air…

Q: Mike and Carl are fighting over a 1 kg stick.  Mike pulls to the right with a force of 30 N and Carl…

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Q: A rescue helicopter lifts a 57.7-kg person straight up by means of a cable. The person has an upward…

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Q: A scale in the elevator’s floor measures the weight of the passengers, and it has the correct value…

A: Given, a situation where an elevator moves up with a constant speed of v=3.2 m s-1.   Recall that,…

Q: A person’s weight is 26 newtons when he is on earth but only 30 newtons when he is at the surface of…

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Q: Fernanda is standing on a scale while riding an elevator. The elevator accelerates upward from rest…

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Q: Bran is pushing Amira in a sled. The combined mass of the sled and Amira is 40.0 kg. There is a…

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Q: What is the magnitude

A: 0.346 m/s2

Q: What is the weight, in N, of an object with a mass of 140 kg at a location where g = 9.6 m/s2?…

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Q: Two weights, each weighing m, are hung over a pulley. If an additional weight of 100 g is attached…

A: Here given two weights each are weighing m. They are hanged from a pully. There is an additional…

Q: A crate (20 kg) is hung in an elevator by a cord rated to withstand a tension of 500 N. The elevator…

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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: determine the man's upward acceleration. Use g = 9.80 Question 15. A person whose weight is 519 N is…

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Q: A student pushes a 10 kg box with a force of 30 N at an angle 45 degrees below the horizontal. The…

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Q: A contestant in a games event pulls a 30.0-kg rock across a rough surface for 30.0m with a rope over…

A: Given data The mass of the rock is m = 30 kg. The distance travelled by the rock is d = 30 m. The…

Q: person’s weight is 26 newtons when he is on earth but only 30 newtons when he is at the surface of…

A: acceleration due to gravity on Earth: ge = 10m/s2 Wt on Earth= 26 N Wt= m×g= 26 m×ge=26  m=2.6 kg

Q: A 50 kg astronaut on a space-walk pushes with a force of 50 N against a satellite that has a mass of…

A: Given quantities: Mass of the astronaut (m) = 50 kg Mass of the satellite (M) = 250 kg Applied force…

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

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Q: How do you find the normal force between a table with a mass of 35 kg and the floor? (Assume that…

A: In this problem, it is asking the normal force between the table and the mass.

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: Bob pushes on a frictionless cart of mass 15.2 kg and the cart has an acceleration of 16.6 m/s2. If…

A: Mass of object 1 is Acceleration of object 1 is The force on object 2  is twice of force on object…

Q: A Bullet with a mass of 5.2 grams is fired out of a rifle. The bullet’s initial velocity is 0…

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Q: A 2 kg book is pushed across a rough table with a 12 N force.  A 2 N frictional force also acts on…

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Q: The cable supporting a 2165 kg elevator has a maximum strength of 24070 N . What maximum upward…

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Q: A child pulls a 20 kg sled with a rope that makes an angle of 30° with the ground. The tension in…

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Q: jet aircraft with a mass of 4,650 kg has an engine that exerts a force (thrust) equal to 60,800 N.…

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Q: The weight of a person on earth is equal to 302 N. Suppose this person is on our moon where the…

A: Mass: It is the quantity of matter in an object. The mass of the person mentioned in the question…

Q: You hang a 1.0 kg mass from a spring scale. But this time, instead of holding your hand still so…

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Q: Newton's law of universal gravitation can be expressed by the equation Mm F = G where F is the…

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Q: A person with a mass of 75.0 kg stands on a scale in an elevator. What does the scale read when (a)…

A: (a) Take the upward direction to be positive. The forces acting on the person are the weight of the…

Q: A 1420 kg elevator is moving upwards at 4.1 m/s and stops in 1.7 s. What is the tension in the cable…

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Q: Consider a human who weighs 862 N on Earth. What is the person's mass on Earth? And what is the same…

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: