Although people would surely avoidgetting into the elevator with you, suppose that you wiegh yourself while on an elevator that is moving. Would you weigh more than, less than, or the same as when the scale is on a stationary floor? In fig.ą, a passenger of mass m 72.2 kg stands on a platform scale in an elevator cab. We are concerned with the scale readings when when the cab is stationary and when it is moving up or down. (a) find a general solution for the scale reading, whatever the vertical motion of the cab. (b)what does the scale read if the cab is stationary or moving upward at a constant 0.50 m/s?

Q: Q3. A 62-kg small block is being moved by a pulley system as shown in Figure 2. The angle is given…

A:

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

A: Write the given values with the suitable variables. a=1.21 m/s2m=102.9 kg Here, a is the…

Q: A hockey puck goes from 0 to 108 mph in 1/10 seconds. The acceleration is uniform. The puck has mass…

A: (a)ans:-. Use formula    V=u+at

Q: A helicopter with mass 2.95 x 10“ kg has a position given by r(t) = (0.050ti + 5.5tj – 0.090t k) m.…

A:

Q: r an annual checkup, you leave your physician's office, where you weighed 714.76 N. You then get…

A: Just replace the values and its done

Q: Three boxes are being pushed across a frictionless surface by a horizontal force of size 284 N.  Box…

A: According to Newton's Second law of motion, The magnitude of force on an object is given by F = Ma…

Q: Boxes A and B are in contact on a horizontal, frictionless surface (Figure 1). Box A has mass 19.0…

A: Given, Box A has a mass of 19.0 kg box B has a mass of 8.0 kg A horizontal force of 130 N is exerted…

Q: A student's backpack, full of textbooks, is hung from a spring scale attached to the ceiling of an…

A: We have to find mass of the bag pack. Given that the download acceleration of the bag pack is given…

Q: A 120 kg man is standing on a scale in an elevator moving downward. If the elevator decelerates at…

A:

Q: An astronaut on the moon places a package on a scale and finds its weight to be 13 N. (a) What…

A:

Q: A UAB hospital ambulance of mass 1,943 kg is parked at rest on a road that that has an incline of…

A:

Q: A traffic light is hanging from two cables. Cable #1 pulls up and left, making an angle of 45o with…

A:

Q: Consider pushing a lawn mower. Imagine that the lawn mower's handle was angled downward from the…

A: mass of lawn mower (m) = 23.4 kg Applied pushing force (F) = 232.5 N coefficient of friction (μ) =…

Q: A weight balance inside an elevator measures your weight to be 700 N when the elevator is at rest.…

A: Apparent weight when elevator going down is as follows: Wa=W-ma…

Q: In Melde's experiment, find weight added in the pan when number of loops on the string changes from…

A: Description :  In this question we have to find the weight added in the pan (M2) here we know the…

Q: Accident analysis has led experts to believe that Princess Diana experienced a deceleration rate of…

A: At the time of her accident, Diana experienced a deceleration rate of 700 m/s2. This deceleration…

Q: You are standing on the floor of a stationary elevator.  You weigh 99.7 kg, what is the magnitude of…

A: Given  Mass of man m=99.7kg Free body diagram is shown below

Q: A horizontal force is applied to a box of books having a 21 kg and resting on a wooden table. How…

A: The normal force is the force exerted by an object (in this case, the table) in response to an…

Q: American astronauts brought a trunk of instruments on their trip to the Moon. The mass of the trunk…

A: Given: Here we have a trunk which is taken from earth to the moon and the mass of the trunk on…

Q: A mass of 2.9 kg is on a horizontal surface. An applied force of 33 N at an angle of -36.5 degrees…

A:

Q: A box of mass m is placed on a horizontal table.the magnitude of the Normal perpendicular to the…

A: Given, A box of mass m is placed on a horizontal table. The force acting in vertical direction is…

Q: A block weighs 100kg and is resting on a plane that is incline to the horizontal at an angle of 200.…

A:

Q: Suppose 15 children who weigh the same are playing a game of tug-of-war. Five children pull with 5…

A:

Q: A mass M=99.2 kg is suspended by a massless string from the ceiling of a van which is moving with…

A: Note that image given in part b is not related to physics, It is related to chemistry. So we can…

Q: A 3 kg object has a velocity of 3i m/sat one instant. 8 seconds later, its velocity is (5i + 7j)…

A: mass = 3 kg initial velocity = 3 i^ msfinal velocity = 5i^ + 7j^ mstime = 8 seconds

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

A:

Q: How much force must the person apply to the suitcase to get it to start sliding? Find anequation…

A: mass of suitcasem=20 kgcoefficient of static frictionμ=0.30coefficient of kinetic…

Q: If I pull a 120kg sled with 240N of force and it accelerates with an acceleration a=0.5m/s^2, what…

A:

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

A: Here we have to find (a) Lamp's mass and (b) Cord's tension For each free body diagram of the FBD,…

Q: What does the scale read (in newtons) when the elevator is descending at a constant speed of 9.00…

A:

Q: What will be the weight of a boy of mass

A: Given; Weight of a body mass;   ⇒2 kg=20NWhat will be the weight of a boy of mass 42 kg ?

Q: It is found that when a particular object with a mass of 0.41 kg is released from rest while…

A: Given data: Mass of the object, m = 0.41 kg, Coefficient of proportionality in the resistive force,…

Q: You are standing on the floor of a stationary elevator.  You weigh 92.2 kg, what is the magnitude of…

A: Solution as

Q: As part (a) of the drawing shows, two blocks are connected by a rope that passes over a set of…

A: The weight of the heavier block is: W = 908 NThe weight of the lighter block is: W'= 412 N

Q: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 92.9 kg, down a…

A:

Q: Sketch two cables, one at 17.3° and another at 12.8° from the ceiling, hold a 1989.8 kg platform. A…

A: This question is based on Newton's laws of motion topic. We need to draw a free body diagram and…

Q: A horse is harnessed to a sled having a mass of 251 kg, including supplies. The horse must exert a…

A:

Q: Two blocks are in contact on a frictionless table. A horizontal force is applied to the larger…

A:

Q: A block of wood that has a mass of 5 kg rests on a horizontal surface. A horizontal force of 20 N…

A: (a) Analyze the free body diagram of the given system. Here, F, fs, W and N represent the…

Q: parts

A: Given: Force exerted = 440 N

Q: Someone (whose mass is 60 kg) is standing on a scale in an elevator that is accelerating upward,…

A: By newtons law we know that net force acting on an object is given by  Fnet=ma Where m is mass of…

Q: Two blocks are in contąct on a frictionless table. A horizontal force is applied to the larger…

A: Given two blocks mass of block one M1 =2.9kg  Mass of block two M2 = 1.3kg  Force F=2.6N We have to…

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…

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?”