Two horizontal forces,  and , are acting on a box, but only  is shown in the drawing.  can point either to the right or to the left. The box moves only along the x axis. There is no friction between the box and the surface. Suppose that  = +8.4 N and the mass of the box is 3.9  kg. Find the magnitude and direction of  when the acceleration of the box is (a) +6.8 m/s2, (b) -6.8 m/s2, and (c) 0 m /s2.

Q: Cauchy is trying to push a cart with a force of 75N at an angle of 34 degrees, but the ground is…

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Q: Only two forces act on an object (mass=3.92 kg), as in the drawing. Find (a) the magnitude and (b)…

A: Given Data: The mass of an object is, m=3.92 kg The forces are given as, F1=40 NF2=60 N   The…

Q: An athlete pulls box E using an inextensible rope P while being resisted by another inextensible…

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Q: A space probe has two engines. Each generates the same amount of force when fired, and the…

A: Data given: Time taken for the first case (t1) = 38.3 sec New Time (t2) =?

Q: Two blocks of masses m1=105 kg and m2-65 kg are in contact and at rest on a horizontal surface as…

A: The expression for the acceleration from Newton’s second law,

Q: In the figure, block A has a mass of 4.00 kg. It rests on a smooth horizontal table and is connected…

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Q: Consider the two-body situation at the right. A 3.50x103-kg crate (m1) rests on an inclined plane…

A: Given mass  (inclination)= Let T be the tension in the rope -----------------1 where  For block…

Q: The following figure shows a pair of blocks connected with an inextensible light rope that passes…

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Q: Two blocks with masses m, = 4.60 kg and m, = 7.40 kg are connected by a light string, as in the…

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Q: A rigid wire frame is formed in a right triangle, and set in a vertical plane as shown. Two beads,…

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Q: In shot putting, many athletes elect to launch the shot at an angle that is smaller than the…

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Q: If the only forces acting on a 2.0kg mass are F1=(3i-8j)N and F2=(5i+3j)N, what is the magnitude of…

A: The net force acting on the particle is given by, F→net=F1→+F2→=3i^-8j^N+5i^+3j^N=8i^-5j^N

Q: Consider a 100-N weight suspended by two wires as shown in theaccompanying figure. Find the…

A: Let the weight of the suspended mass be denoted as W The equilibrium condition for the above…

Q: Two blocks A and B of respective masses m, = 15 kg and mg = each other by a massless rope. Block B…

A: Given: mA=15 kgmB=25 kgF=300 Nθ=30coeff of kinetic friction μ = 0.2 g=10 m/s2

Q: Three astronauts, propelled by jet backpacks, push and guide a 123 kg asteroid toward a processing…

A: Mass , m = 123 kg F1 = 29 N F2 = 50 N F3 = 43 N θ1 = 30°, θ3 = 60°. To find = a) Magnitude of…

Q: Let a block of mass m1 be located on a plane with inclination 0 and joined by a rope passing through…

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Q: a box of ant aunts (totalmass m1 = 1.65 kg) and a box of ant uncles(total mass m2= 3.30 kg) slide…

A: The net force 1,

Q: On a particle of mass m = 20gr, three forces F1, F2 and F3 act in the plane of the paper. The forces…

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Q: A space probe has two engines. Each generates the same amount of force when fired, and the…

A: Given:Time taken to travel a certain distance when both forces are in same direction = 31.2 s

Q: On a particle of mass m = 20gr, three forces F1, F2 and F3 act in the plane of the paper. The forces…

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Q: Two packing crates of masses  m1 = 10.0 kg  and  m2 = 6.70 kg  are connected by a light string that…

A: Let T and a are the tension and the acceleration of both mass.Consider the FBD of both mass below.

Q: shows two blocks connected by a cord (of negligible mass) that passes over a frictionless pulley…

A: Given: M = 2.8 kg  m = 1.3 kg

Q: Consider 2 forces acting on a mass of 2.54 kg. F1= 10.3 N @ 22.3 degrees and F2 = 6.82 N @ 79.1 %3D…

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Q: Consider a 25-N weight suspended by two wires as shown in the accompanying figure. If the magnitudes…

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Q: Two packing crates of masses m, = 10.0 kg and m, = 4.00 kg are connected by a light string that…

A: Given- Create of masses m1=10 Kg and m2=4 KgIncline of angle θ=440

Q: A ball of mass m1 and a block of mass m2 are attached by a lightweight cord that passes over a…

A: Consider the free body diagram of mass m2 is shown below, Forces act along the acceleration is…

Q: Block B has mass 6.00 kg and sits at rest on a horizontal, frictionless surface. Block A has mass…

A: Given: mass of block B, mB=6 kg mass of block A, mA=3.50 kg co-efficient of static friction, μ=0.4…

Q: Consider 2 forces acting on a mass of 2.64 kg. F1 = 10.8 N @ 24.8 degrees and F2 = 6.96 N @ 66.1…

A: Given: Mass m = 2.64 kg. Forces are, F1=10.8 N @ 24.8o from x axisF2=6.96 N @ 66.1o from x axis

Q: Two blocks of mass M and M2 are connected by a massless string that passes over a massless pulley as…

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Q: A 6-kg block and a 3-kg block are connected by a string as shown. If the pulley is massless and the…

A: given: m1=3 Kg m2 = 6kg let tension in string is T

Q: The figure shows two blocks connected by a lightweight string across a frictionless pulley. The…

A: Given:Mass of block, m1 = 6 kgMass of block, m2 = 3.5 kgAngle of inclined plane = 43.5ο

Q: packing crates of masses m1 = 10.0 kg and m2 = 4.00 kg are connected by a light string that passes…

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

Q: As shown below, the mass of block 1 is m1 = 4.0 kg, while the mass of block 2 is m2 = 8.0 kg. The…

A: Mass of block 1 is m1 = 4.0 kg Mass of block 2 is m2 = 8.0 kg Coefficient of static friction between…

Q: Two packing crates of masses m1 = 10.0 kg and m2 = 3.70 kg are connected by a light string that…

A: Consider the below free-body-diagram for both the blocks.

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

A:

Q: Two packing crates of masses m1 = 10.0 kg and m2 = 6.00 kg are connected by a light string that…

A: The net force exerted on the block m2 along x axis is, ∑Fx=maxT-m2gsinθ=m2a…

Q: Two forces, F1=20 N and F2=10 N, are acting on a block of mass 5kg sitting on a horizontal surface…

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Q: A block of mass 105 kg lies on a horizontal plane. A horizontal force F of magnitude 1001 N is…

A: The free-body diagram of the block on the horizontal plane is shown below. Here, m is the mass, F…

Q: In the following figure the horizontal surface on which this block slides has the coefficient of…

A: F = 40 N M = 10 kg coefficient of kinetic friction = 0.03

Q: Two objects of masses m1 and m2, with m1 greater than m2, are connected by a string and sit on a…

A:

Q: The figure shows two blocks connected by a lightweight string across a frictionless pulley. The…

A: The net force exerted on the ramp is,Rewrite the equation (1) for tension.

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

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Q: A commercial airliner with four jet engines, each producing 88 kN of forward thrust, is in a steady,…

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Q: Two blocks of mass Mj and M2 are connected by a massless string that passes over a massless pulley…

A: Given Data Mass of the first block is M1=3.75 kg Angles of inclination are θ1=57.5° and θ2=19.5°…

Q: Consider two blocks hung by a massless string from a frictionless pulley as shown in the figure The…

A: Tension in a string when both block angle makes zero degree angle is given by the formula:- T =…

Q: magnet of mass 4.72 kg is suspended from the ceiling by a cord as shown. A large magnet is somewhere…

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Q: Two packing crates of masses m, = 10.0 kg and m, = 4.90 kg are connected by a light string that…

A:

Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.