Consider the figure on the left, in which two blocks are being pushed across a frictionless surface. The blocks have masses m1 = 3kg and m2 = 15kg. (a) How hard are you pushing on m1, if the acceleration of m2 is 6m/s2? (You are pushing horizontally, as shown in the figure.) (b) What is the contact force between m1 and m2? (Still focusing on the figure on the left.) (c) Now consider the figure on the right, in which m2 is lifted off the ground. If the coefficient of static friction between m1 and m2 is 0.2 how hard would you have to push the blocks to ensure m2 would not slide down m1?

Q: As illustrated in the right figure, three blocks with masses of mA, mB, and mC are placed on top of…

A:

Q: 3 Cat Burglar 45° T3 T2 Tz T. A cat burglar is planning a daring heist. He will lower himself from a…

A: Given: Weight of the burglar, W=150 lbs Maximum tension for the rope, Tmax=100 lbs

Q: There are two forces on the 11.5 kg crate in the overhead view of the figure below, but only one is…

A: Newton’s second law of motion in the horizontal direction

Q: In the figure below, the mass the body is 10.0 kg, and F1=30.0 N, F2 = 20.0 N and F3 = 50.0 N. The…

A: The component of F1→along x-axis is F1cosθ1 and along y-axis is F1sinθ1. Similarly, the component of…

Q: To move a box you pull on the handle as indicated in the diagram shown below with a constant force…

A: The box's free-body diagram is shown below. Here, N denotes the normal force.

Q: Two blocks are connected by a massless rope. The rope passes over an ideal (frictionless and…

A: ∗  T=Tension  in string         m2g=weight  of  m2         m1=14.25kg, m2=7.5 kg…

Q: Aliyah is solving a physics problem involving an elevator. She draws the (unlabeled) force diagram…

A:

Q: The weights of Burl, Paul, and the scaffold produce tensions in the supporting ropes. Rank the…

A: Here, then tension depends on the weight.

Q: Harry the painter swings year after year from his bosun’s chair. His weight is 500 N and the rope,…

A:

Q: Two forces are applied to a 4.0 kg cart on a rough surface as shown. At a certain instant, force A…

A:

Q: Two uniform 66.1-gg marbles 2.16 cmcm in diameter are stacked as shown in the figure (Figure 1) in a…

A:

Q: You have designed an Atwood elevator for your tree house, see figure below.  Being a curious physics…

A: Given that,                  The value of mass M2=10 kg.                  The value of acceleration…

Q: Two linemen are pushing on the same football sled from the same side and at the same height.  One…

A: Two linemen are pushing on the same football sled from the same side and at the same height.  One…

Q: Below is a diagram with a square of mass 2kg, a circle of mass 3.5kg, and a triangle of mass 5kg.…

A: Given values: Mass of square, ms=2 kg Mass of circle, mc=3.5 kg Mass of triangle, mt=5 kg Separation…

Q: A robot pushes a 20-kg box on the horizontal surface as part of the moving job. The force is 300 N…

A:

Q: A mechanic is dragging an 18-kg tire across the floor at a constant velocity, while pulling with a…

A: Given Tire weight, m=18kg Force, F=120N Angle, θ=350 Acceleration due to gravity, g=10 m/s2

Q: (a) (b)

A: from fig. (a) 2T = mg2 (92.4) =m (9.8)m = 184.89.8 =18.85 kg

Q: A cabinet of mass 5.8 kg is at rest on a ramp as shown. What is the magnitude of the friction force…

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Q: Two masses (A) and (B) are connected by a cord as shown in the figure below. The objects have masses…

A: According to Newton's second law of motion, the net force acting on a object of mass m, is given by…

Q: Three arrows are shot horizontally. They have left the bow and are traveling parallel to the ground…

A: When air resistance is zero, then the horizontal acceleration of the arrow will be also zero.

Q: A jet aircraft with a mass of 4,550 kg has an engine that exerts a force (thrust) equal to 59,200 N.…

A: Given: The mass of a jet aircraft is m = 4550 kg. Force exerted by the engine is F =59200 N.

Q: Charles went ice skating over the weekend with Krupa. Charles has a mass of 12 kg and was standing…

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Q: a 75 Kg person stands on a scale that reads 500 Newtons, The person is pulling on a rope that is…

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Q: Shawn is walking two dogs; Walter and Rosie. Rosie is pulling straight ahead with a force of 31 N.…

A: Given data:  Two forces at right angle to each other F1 = 31 N F2 = 186 N Angle between these forces…

Q: An astronaut weighing 255 Ibs on Earth is on a mission to the Moon and Mars. (a) What would he weigh…

A: (a) weight on Moon W∝gWmoonWearth=gmoongearthWmoon=gmoongearthWearth=16255 lbs4.44822 N1 lbs=189 N

Q: A student is using an instrument to measure a force. The reading on the instrument is shown on the…

A: The name of this instrument is spring balance.

Q: Two weights are hanging from the ceiling of an elevator as shown in (Figure 1). Find the tension in…

A:

Q: A block of mass m = 5.6 kg is pulled up a 0 = 26° incline as in the figure below with a force of…

A: Given data The mass of the block is m = 5.6 kg The angle of inclination is: θ = 26° The magnitude of…

Q: The horizontal wire shown on the right in the figure below will break when the tension in it exceeds…

A: Consider the free-body diagram of the given object as follows.

Q: A jet aircraft with a mass of 4,525 kg has an engine that exerts a force (thrust) equal to 60,400 N.…

A: Part A. force is given as follows: F=ma60400=4525×aa=13.348 m/s2   Part B. Final speed after 9 s…

Q: Consider the picture of 2 blocks connected by a pulley. If the frictional coefficient is 0.85, how…

A:

Q: Figure shows the velocity graph of a 65 kg student in an elevator. What is the student's apparent…

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Q: A push and a pull of magnitude F1=3.9 N and F2=5.8 N act on a block of weight 11 N resting and not…

A: Solving the given problem by analyzing the forces acting on the block

Q: A man is attempting to lift a crate using a two part pulley system as shown in the image. The crate…

A: (1) Given: The mass of the crate is 53 kg. The mass of the man is 75 kg. The force with which the…

Q: 5. A 210-N mass is suspended from a horizontal beam by two cables that make angles of 29° and 53⁰…

A:

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?”