”If you are in an elevator that is accelerating downwards, the normal force Fn that the bottom of the elevator applies on your feet (pointing up) has to be less than the force of gravity, Fg=mg, pulling you and the elevator downwards.” Together with your collaborator, discuss whether this can be correct?

Q: An object is hanging by a string from your rearview mirror. While you are accelerating at a constant…

A: Consider the free-body diagram of the object hanging.

Q: If we apply a constant force of 100 N on a 10.0 kg object that is located on a surface, what is the…

A: Given data F=100 Nm=10 kg

Q: Is it true that when you drop from a branch to the ground below, you pull upward on Earth? If so,…

A: From Newton's law of gravitation: The gravitational force acting between two massive objects is…

Q: Suppose you have a 120-kg wooden crate resting on a wood floor. If you push with a force of 589 N,…

A: Given data Mass of the crate, m=120 kg Force, F=589 N

Q: You are pushing a large crate from the back of a freight elevator to the front as the elevator is…

A: Elevator system

Q: A woman resting on ice, with mass 62.7 kg was pulled by a man with force F at 35 degrees above…

A: Given: The mass of the woman is 62.7 kg. The force is 35 degrees. The displacement is 60.9 m. The…

Q: A body at rest or in uniform motion is one that undergoes acceleration is in equilibrium O is acted…

A: Given : A body is in rest or uniform motion .

Q: Give the magnitude and direction of the net force acting on a) a drop of rain falling down with a…

A: Here given a drop of rain falling with a constant speed . We have to find the magnitude and…

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: What is the net force acting on an 85.9kg person resting on the floor?

A: We know that when an object is in rest on a floor the net force is  F = mg-N Now, N is the reaction…

Q: If a body is moving with constant velocity, does it mean that there is no force acting on it?

A: If a body is moving with constant velocity then it does not mean that there is no force acting on…

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

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

A:

Q: If the hanging block shown in the figure has a mass of 6.0 kg, calculate the tension in string 1.…

A:

Q: A 25 kg mass is suspended from a ceiling by two cords. The cords make angles of 45° and 70° with a…

A:

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

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Q: If M = 1.5 kg, what are the tensions in string 1 and string 2? -40° 40° M 1 2.

A: Introduction: At the equilibrium condition, the net force on the object will be zero, so the net…

Q: The of the tension force of the string is: Choices: greatest in I greatest in II greatest in III…

A: For Equilibrum forces must be balanced

Q: Determine the weight on an object when the mass of the object is 50 kg and the acceleration due to…

A: Determine the weight on an object when the mass of the object is 50 kg and the acceleration due to…

Q: What net external force is needed to impart an acceleration of 2.00 m/s2 on an object of mass 10.0…

A:

Q: Your instructor challenges you and your friend to each pull on a pair of scales attached to the ends…

A: As the two persons pull the horizontal rope, the tension will be the same at both the ends.

Q: A pendulum bob of mass 50 g is suspended from the ceiling of an elevator. Find the tension in the…

A:

Q: As you stand on a floor,does the floor exert an upward force against your feet? How much force does…

A:

Q: 3 kg 4 kg F Find the tension in the string (in terms of F) connecting these two masses if force F…

A:

Q: the force exerted by gravity on 70 kg = N. О 10 68 686

A: A force exerted by gravity is calculated by the formula:   F = mg   Here m is the mass of object and…

Q: Is the force applied to drag the carriage affected by a change in inclination? Why?

A: Is the force applied to drag the carriage affected by a change in inclination?

Q: Compared to the force that the sun exerts on the earth, the force exerted by the earth on the sun…

A: The gravitational force between between two planets is given by F = Gm1m2/r2  Here, G = universal…

Q: A block with mass m = 11 kg is suspended by two massless identical Take cords. 10 m/s². The…

A:

Q: What is the magnitude of the net force on the object below? 97.3 N 86.1 N

A:

Q: If an object is moving, is it possible for the net force acting on it to be zero?

A: According to Newton's second law, when a force applied to a system of mass M, it will accelerate.…

Q: A box of mass (m1=3.00 kg) rests on a table, but is also supported by a mass, (m2=1.14 kg) hanging…

A:

Q: Why can we neglect forces such as those holding a body together when we apply Newton’s second law?

A:

Q: If two objects are separated by some distance and that distance is reduced by one-half, the force of…

A: The force of attraction between two objects in this universe is defined as the gravitational force…

Q: 11. Calculate the tension exerted by the string. Neglect force by air and friction force. m2 20 kg…

A: Given data The mass of the first block is m1 = 10 kg The mass of the second block is m2 = 20 kg The…

Q: g from rest at the ground floor accelerates uniformly attaining a speed of 144 m/min after traveling…

A: GivenWeight of elevator, W=9.8 kNFinal speed of elevator, v =144 m/minDistance travelled by…

Q: A driver in a saloon car with narrow tyres finds himself in a sandy  environment, what should he do…

A: If a driver in a saloon car with narrow tyres finds himself in a sandy environment, driver should…

Q: The force acting on an object in projectile motion are the same as those acting on an object in…

A: The answer for the given problem is

Q: Supposing you were in space in a weightless environment, would it require a force to set an object…

A:

Q: Two masses, connected by a massless string, hang over a pulley that connects two inclines (Figure &…

A:

Q: If an object is moving, is it possible for the net force acting on it to be zero? Explain in words

A: According to Newtown 2nd law if net force acting on body is zero then the body at rest will be at…

Q: You are riding a race car at a constant speed of 225 km/ h when you pass by another vehicle with a…

A: Answer Given Speed of first car s1 = 225 km/h Speed of second car s2 = 88 km/h

Q: By virtue of the 3rd Law of Motion, we are pulled on Earth by gravity and we are also pulling the…

A: The correct option is (a).  i.e  The acceleration of the Earth towards us is negligible due to…

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!