A car is traveling down a hill that makes an angle of 21° with the horizontal. The driver applies her brakes, and the wheels lock so that the car begins to skid. The coefficient of kinetic friction between the tires and the road is μK = 0.65.  (a) Find the acceleration of the car. Take down the ramp to be the positive direction. (b) How long does the car take to skid to a stop if its initial speed is 32 mi/h (14.30528 m/s)?

Q: A 3.5 kg block is placed on a surface inclined by 0, = 27° above horizontal. The coefficient of…

A: Given data: Mass of the object, m=3.5 kg Inclined angle, θ=27o Coefficient of kinetics friction,…

Q: A block with a mass of 4.0 kg is released from rest and slides down a long, smooth ramp. The incline…

A:

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: chandelier is suspended by two identical, vertical chains side by side. The chandelier's mass is m =…

A: m=6.7 kg assume g=10 m/s2 tension in the chains=T+T= 2T

Q: An object of mass 4 kg originally suspended by a vertical cord is pulled by a horizontal force until…

A: Write the given data. m=4 kg In this case, if system is at rest then the tension in cord will be…

Q: A student uses a force P of magnitude 55 N and angle 0 = 75° to push a 4.0 kg block across the…

A: Given: The mass of the block is m=4 kg. The magnitude of the force is P= 55 N. The angle with the…

Q: A person pushes horizontally with a force of 160 N on a 55.0 kg crate to move it across a level…

A:

Q: A 35.0-kg child swings in a swing supported by two chains, each 2.90 m long. The tension in each…

A: The child's mass:the length of the chains: The tension in the chains at the lowest point:

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

A:

Q: You must push a crate across a floor to a docking bay. The crate weighs 194 N. The coefficient of…

A:

Q: You managed to pull a heavy crate up a ramp on a truck. The crate has mass 48 kg. You were pulling…

A: Given data:  Mass of crate (m) = 48 kg Applied force (FA ) = 464 N Inclined angle (θ) = 29.5°…

Q: While an elevator of mass 903 kg moves downward, the tension in the supporting cable is a constant…

A: It is given that, y=5 mt=4 sT=7730 NM=903 kg

Q: A skier traveling travelling with a magnitude of velocity v approaches a ramp that has an angle of…

A:

Q: One end of a rope is tied to a 11 kg hanging weight. The rope goes over a pulley and the other end…

A:

Q: A child is pulling a red wagon full of toys (total mass is 8.35 kg). His pull is 34 N in magnitude…

A:

Q: A rescue helicopter is lifting a man (weight = 681.703756418782 N) from a capsized boat by means of…

A:

Q: he top of a ramp, which is inclined at an angle of 20 degrees with respect to the horizontal.…

A:

Q: A block of mass 2.05 kg is accelerated across a rough surface by a rope passing over a pulley, as…

A:

Q: The brakes on a big truck fail and it is forced to use a runaway truck lane. The lane is perfectly…

A:

Q: You managed to pull a heavy crate up a ramp on a truck. The crate has mass 50 kg. You were pulling…

A: Force applied (F)= 480 N Coefficient of kinetic friction (µk)= 0.49 Mass of crate(m)= 50 kg Angle of…

Q: You managed to pull a heavy crate up a ramp on a truck. The crate has mass 47 kg. You were pulling…

A:

Q: Two blocks are connected by a string that goes over an ideal pulley as shown in the figure. The…

A: For Block A, Frictional force, Fk=μk.mA.g.sinθ, μk= Coefficient of kinetic friction Component of…

Q: (a) (b)

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

Q: A chandelier hangs h = 0.56 m down from two chains of equal length. The chains are separated from…

A:

Q: A vertebra is subjected to a shearing force of 540 N. Find the shear deformation, taking the…

A:

Q: Consider a 9.74-kg box on a ramp angled at 47.7 degrees above the horizontal. The coefficient of…

A: m=9.74 kgθ=47.7°μs=0.415μk=0.161

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: A box of mass 7.3 kg is slid along the floor. The initial speed of the box is 6 m/s and it comes to…

A:

Q: A box is initially sliding up a 32.5° incline at a speed of 13.0 m/s. The coefficients of friction…

A:

Q: You are pushing a rubber crate against a concrete floor. The two surfaces have a static coefficient…

A: when some force is applied against friction at first it will try to overcome the static friction.…

Q: A cable attached to a block of mass 10.05 kg pulls the block along a horizontal floor at a constant…

A: The block is on a horizontal floor. Therefore, the normal reaction on the block be: Using the…

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: Consider a wooden ramp angled 30.1 degrees above horizontal. If a 10.2-kg wooden block is given a…

A: Draw the free-body diagram of the block.

Q: A block weighing mA = 10 kg is placed on a plane with slope angle 30.0 degrees and is connected to a…

A: A block weighing mA = 10 kg is placed on a plane with slope angle 30.0 degrees and is connected to a…

Q: ou are pushing a wooden crate against a rubber floor. The two surfaces have a static coefficient of…

A: Given: The mass of the crate is 25 kg. The coefficient of the static friction is 0.45. The…

Q: (a) A flatbed truck moving at 28 m/s carries a steel girder that rests on its wooden floor. The…

A: (a)       Given that,    Initial speed of the truck () = 28 m/s…

Q: A man is walking up a hill inclined at 24 degrees at constant speed while pulling a 23.6 kg box by a…

A:

Q: A sled of mass 95 kg is being pushed up a slope with an applied force of 937 N. The slope is…

A: The figure shows the sled mass pushed up a slope.

Q: When an object slides on a surface, it encounters a resistance force called friction. This force has…

A: Given data: Mass of the object is m=30 kg Coefficient of kinetic friction is μ=0.2 The inclination…

Q: A block of mass 4.6 kg is sliding down a ramp with an initial speed of 1.5 m/s. The ramp is inclined…

A:

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: