A contestant in a winter games event pushes a 32.0 kg block of ice across a frozen lake as shown in Figure 4.29(a). The coefficient of static friction is 0.1 and the coefficient of kinetic friction is 0.03. (a) Calculate the minimum force F he must exert to get the block moving. (b) What is its acceleration once it starts to move, if that force is maintained?

Q: 5.79 •• Block A in Fig. P5.79 weighs 1.20 N, and block B weighs 3.60 N. The coefficient of kinetic…

A:

Q: In the example of a box on a horozontal frictionless floor, if I push the 2kg box with 20 N of…

A: Given: The mass of the object is 2 kg. The applied force on the object is 20 N.

Q: You slide a 0.0115 kg hockey puck up an icy hill that has a slope of 16 degrees. If the coefficient…

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Q: . If half of the weight of a flatbed truck is supported by its two drive wheels, what is the maximum…

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Q: The net force acting on a Cessna 172 airplane has a magnitude of 1900 N and points in thepositive x…

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Q: A 2-kg object is thrown upwards with an initial velocity of 16 m/s. At the peak of the trajectory,…

A:

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: The acceleration of a block of 5 kg is 7 m/s^2. If the friction coefficient is 0.4 . Then find the…

A:

Q: At the end of a roller coaster ride, the cars must slow to a stop, but the magnitude of the…

A: Given data:  Maximum acceleration (a) = 1.5g Mass (m) = 2000 kg Required: The magnitude of the…

Q: Why must an object at rest have either no force or a minimum of two forces acting on it?

A: Explanation:   1. According to the newton1st law, If the body is in motion it always in motion or…

Q: An object of mass m is initially at rest. After a force of magnitude F acts on it for a time T, the…

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Q: What force, applied parallel to the plane, is necessary so that a 100 lb object will slide down the…

A: Given data The mass of the object is m = 100 lb The acceleration of an object is a = 8 ft/s2 The…

Q: A freight train has a mass of 1.2 ✕ 107 kg. If the locomotive can exert a constant pull of 6.9 ✕ 105…

A: freight train has a mass = 1.2 ✕ 107 kg vi = 0 m/s vf = 70 km/h = 19.44 m/s F(locomotive) = F(pull)…

Q: A 200 kg refrigerator is being pushed with enough force to move it at a constant velocity.  If the…

A: To find the force exerted

Q: Three boxes slide on a frictionless horizontal surface when pulled by a force of magnitude F. When…

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Q: The net external force on the 24-kg mower is stated to be 51 N. If the force of friction opposing…

A:

Q: The parachute on a race car of weight 8 820 N opens at the end of a quarter-mile run when the car is…

A:

Q: What net force is required to accelerate an 85 kg sprinter from rest to a speed of 12m/s in 3.0…

A: As per Newton’s 2nd law, the net force can be represented as, Here, m and a represent the…

Q: 1200-kg car accelerates 25 m/s in 10 s. If a frictional force of 150 N resists the motion, what…

A:

Q: A freight train has a mass of 1.1 ✕ 107 kg. If the locomotive can exert a constant pull of 7.6 ✕ 105…

A: From Newton’s second law of motion.

Q: A boat with mass of 6.7 * 10 kg is traveling at 1.2 * 10' m/s. What is the magnitude of the force…

A:

Q: A tractor pulling two trailers, M1 and M2, with a constant acceleration. T has a mass of 200 kg, M1…

A: Given data: The mass of tractor is T=200 kg. The mass of trailer 1 is M1=100 kg. The mass of…

Q: A 2.50 kg mass is released from rest while on and incline of 54.7 degrees. If the coefficient of…

A: Given :    mass of the object, m = 2.50 kg    Inclination angle, θ = 54.70    coefficient of kinetic…

Q: In a tug-of-war between two athletes, each pulls on the ropewith a force of 200 N. What is the…

A: The movement in the rope is zero since the two athletes pull the rope with the same force in…

Q: A freight train has a mass of 1.5 x107 kg. If the locomotive can exert a constant pull of 7.5 x 105…

A: Since there is no frictional force here then by Newton's 2nd Law our force equation will be:…

Q: Assume that the pulleys are frictionless, but the horizontal surface is rough with a coefficient of…

A: According to Newton's second law F = ma

Q: If a constant, nonzero force is applied to an object, what can you say about the velocity and…

A: A non zero force is applied on a body

Q: A typical car travels a distance of 100 km at 110 km/h. It then repeats the journey at 70 km/h. What…

A: According to question --- Given data --  distance - 100 km. first speed (v1) - 110 km/h. second…

Q: a box of 8 kg sliding forward on a table with negative acceleration and its speed is decreasing, if…

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Q: What net external force is exerted on a 1100-kg artillery shell fired from a battleship if the shell…

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Q: A force of 300N acts on a body of mass 150kg calculate the acceleration of body using D alemberts…

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Q: If half of the weight of a flatbed truck is supported by its two drive wheels, what is the maximum…

A:

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: The figure below shows the same two blocks A and But now suspended by a string on either side of a…

A: Free body diagram shows the forces acting. Each body in  system has set of forces acting on it.…

Q: A 2000 kg car in an action movie is skidding sideways and slowing down at a rate of -2.5 m/s?. What…

A: Here car is moving on horizontal surface so Normal reaction offered by ground will be equal to the…

Q: A 3.69x103 kg train is moving at a constant speed of 10m/s on a horizontal railroad track that…

A: initial speed u = 10 m/s mass m = 3.69 x 103 kg frictional force f = 500N Speed changes from 10 m/s…

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: At the end of a roller coaster ride, the cars must slow to a stop, but the magnitude of the…

A: The magnitude of the maximum allowable force goes to completely stop the cars of the roller coaster…

Q: An object that is 2kg is being pushed on a table, which has a coefficient of friction of 0.3.…

A: The magnitude of the force of friction between floor and the table is, Ff=μFN=μmg

Q: A freight train has a mass of 1.1 ✕ 107 kg. If the locomotive can exert a constant pull of 7.4 ✕ 105…

A: Given information:Mass of the train (m) = 1.1 × 107 KgForce the locomotive can exert (F) = 7.4 × 105…

Q: A locomotive is pulling 12 freight cars, each of which is loaded with the same amount of weight. The…

A: The net force on the third car is, T23-T34=ma=37000 kg0.78 m/s2=28860 N Now, rearrange the above…

Q: A freight train has a mass of 1.0 ✕ 107 kg. If the locomotive can exert a constant pull of 8.2 ✕ 105…

A: Given data The mass is, m=1.0x107 kg The force is, F= 8.2x105 N The initial speed is u=0 km/h = 0…

Q: If you exert a horizontal force of 200 N to slide a crate across a factory floor at constant…

A: The crate is moving with a constant velocity. The acceleration of the crate is thus zero. The net…

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: