A toy freight train consists of an engine and three identical cars. The train is moving to the right at constant speed along a straight, level track. Three spring scales are used to connect the cars as follows: spring scale A is located between the engine and the first car; scale B is between the first and second cars; scale C is between the second and third cars. Ignore the weights of the scales. If air resistance and friction are negligible, the relative readings on the three sping scales A, B, and C are the same. What are the relative readings of scales A. B, and C?

Q: A mover has to move a heavy sofa of mass 100 kg to the second floor of the house. He uses a rope to…

A:

Q: A 67.3 kg person is standing inside an elevator. The elevator is traveling from the 1st floor to the…

A: Consider the person’s mass be m, its weight be w, the speed of the elevator be u, the normal…

Q: When installing a Red Carpet for the Oscars, workers found that if they push the carpet roll (image…

A:

Q: A 50.0 kg man standing on a spring scale takes a descending elevator ride (DOWNWARD). Starting from…

A:

Q: A husky is pulling a sled loaded with cargo (total mass m = 34kg) along some snow, which has…

A:

Q: A skier with mass of 55 kg (including winter clothes and ski equipment), slides straight down a…

A: Given:mass of skier, m = 55 kg angle of inclination, θ = 50°

Q: F

A: Given: Mass m1 = 4.7 kg. Mass m2 = 2.4 kg. Upward force F = 6.4 N. Downward acceleration (a) = 4.7…

Q: You place a crate of mass 39.4 kg on a frictionless 3.67- meter-long incline. You release the crate…

A: Given,

Q: You place a crate of mass 20.1 kg on a frictionless 4.69-meter-long incline. You release the crate…

A:

Q: Two boxes are placed on an inclined plane at angle a to the horizontal. The masses of the two boxes…

A: Consider the following diagram. It shows various forces on two boxess. On box 1, the forces are:…

Q: A mover has to move a heavy sofa of mass 101 kg to the second floor of the house. He uses a rope to…

A:

Q: A 2.0 kg block is sliding on a horizontal surface slides to a halt due to friction of magnitude 5.1…

A:

Q: A penguin slides at a constant velocity of 2.54 m/s down an icy incline. The incline slopes above…

A:

Q: A horizontal force of magnitude F = 57.5 N pushes on a block of mass m = 4.7 kg. The block is on a…

A: The given situation can be represented as

Q: You place a crate of mass 38.8 kg on a frictionless 2.20-meter-long incline. You release the crate…

A:

Q: A stacked pair of books with masses m1= 1.5 kg (bottom book) and m2 = 1.0 kg (top book) are tossed…

A:

Q: Two men decide to use their cars to pull a truck stuck in mud. They attach ropes and one pulls with…

A:

Q: You are riding in an elevator on the way to the 18th floor of your dormitory. The elevator is…

A: Given The elevator upward acceleration = 1.90 m/s2 Total mass of the box                    = 36.0…

Q: stly, physicist like to express friction forces in terms of the efficient of friction µ, so that = µ…

A: The problem can be solved using free body diagram and equation of motion.The solution for the given…

Q: In the figure provided, there is a crate of mass 4.87 kg on top of another crate of mass 2.66 kg.…

A:

Q: Consider the folowing situation: A 2 kg box on an inclined frictionless table pulled up the incline…

A: Given data:  The given mass of the block, m=2 kg. The angle of the inclined plane, θ=15°.

Q: the figure shows a woman pulling a suitcase. the suitcase moves at constant velocity. the rope (…

A:

Q: You place a crate of mass 25.1 kg on a frictionless 3.17-meter-long incline. You release the crate…

A: Correct option is (b) 21.8 °

Q: Two horizontal forces, and 2, are acting on a box, but only is shown in the drawing. F₂ can point…

A:

Q: 2.2 Three blocks m₁, m2, and m3 are connected and pulled to the right on a horizontal frictionless…

A:

Q: Two horizontal forces, P and Q, are acting on a block that is placed on a table. We know that P =…

A: Given: The mass of the object is 5.1 kg. P→=-2.1i^+4.25k^ N The velocity of the object is constant.

Q: At a certain mining operation, 2400 kg of gravel falls onto a conveyor belt every minute. If the…

A: Force exerted by the gravel on the belt F=ddtmv=mdvdt+vdmdt=vdmdt             dvdt=0

Q: A car with a mass of 1.3x103 kg is skidding to a stop along a horizontal surface. The car…

A:

Q: hot air balloon begins to rise from rest. The lift on the balloon due to the buoyant force is 5000…

A:

Q: You place a crate of mass 47.7 kg on a frictionless 3.61-meter-long i to slide down, eventually…

A: The angle of incline is 33. 62° The answer is option (4) approximate 33.8°

Q: A mover has to move a heavy sofa of mass 118 kg to the second floor of the house. He uses a rope to…

A: Given data:  Mass (m) = 118 kg Angle (θ) = 30.0°,above the horizontal Acceleration (a) = 0.700 m/s2…

Q: Three blocks are sitting in a row on a frictionless tabale; block 1 has m1 = 10kg, block 2 has m2=20…

A:

Q: A 5-kg block is set into motion up an inclined plane (30°) with an initial speed of 8.0 m/s. There…

A: The 5 kg block is set into motion at an inclined plane upwards, which has an angle of incline of 30.…

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: