We often think of friction and air resistance as forces that we want to minimize because they can hinder the motion of an object.  But they are not always undesirable, and in fact, can be an essential element in a machine or process. Identify one or two applications that depend on friction and air resistance.  Explain how friction or air resistance works in those situations and what would happen if there were no friction or air resistance.  Your initial post should be 75-150 words in length and is due on Sunday.

Q: A block of ice with mass 2.00 kg slides 0.74 m down an inclined plane that slopes downward at an…

A: mass of ice (m) = 2 kg distance moved (d) = 0.74 m θ = 34oinitial velocity (u) = 0 m/s

Q: Q2. An 80 kg dog is lying on the floor at rest. The coefficient of kinetic friction between the dog…

A: We are given force by person. We first find the work done by the person. This is done by finding net…

Q: A 4.1 x 104-kg space probe is traveling at a speed of 12000 m/s through deep space. Retrorockets are…

A: Solution      Given dataMass M=4.1×104kgInitial speed u=12000m/sForce F=−1.7×104N ((as it is acting…

Q: A block of mass M is attached to the lower end of a vertical spring. The spring is hung from the…

A: Mass of block= M Spring constant = k

Q: A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the…

A:

Q: ation! A motor is used to pull a crate horizontally across the ground at a constant speed of 1.7 m/s…

A: Given, the crate moves with constant velocity, so:& So, net force = 0 N and this is a necessary…

Q: A roller-coaster car shown in the figure below is pulled up to point 1 where it is released from…

A:

Q: A 2.6 kg block is attached to a horizontal rope that exerts a variable force Fx (205x) N, where x is…

A:

Q: Block A with a mass of m₁ = 8 kg moves on a level, horizontal table. Block A is connected to block B…

A:

Q: Don't use chat gpt

A: Step 1: Part A  Step 2: Part B

Q: A loop-the-loop section of a track is set up in a General Physics laboratory. A block is sliding on…

A:

Q: A block of mass m₁ = 22.0 kg is connected to a block of mass m₂ = 28.0 kg by a massless string that…

A: The data is given as shown below.

Q: A block is given an initial speed of 4.4 m/s up the 22° plane shown in the figure (Figure 1). Figure…

A: Given thatInitial speed of the blockThe angle of inclinationTo determine that(a)how far up the plane…

Q: A block is given an initial speed of 4.4 m/s up the 22° plane shown in the figure (Figure 1). Figure…

A:

Q: When the 150-lb skier is at point A he has a speed of 5 ft/s. When the skier reaches point B on the…

A: Given, weight of the skier is W=150lb And function yx=75cosπ100x At point A the speed of the skier…

Q: Part G What is the period T ? Part H How much time t does the block take to travel from the point…

A: Given Consider a block of mass m on frictionless  horizontal surface attached to a spring with force…

Q: The 40 kg crate is traveling to the right with an initial v0=1.2 m/s, when a person begins to pull…

A: Given, mass of block = 40 kg initial velocity = 1.2 m/s

Q: A 3kg block slides along a floor with coefficient of kinetic friction UK = 0.3, initially moving at…

A:

Q: A roller-coaster car shown in the figure below is pulled up to point 1 where it is released from…

A:

Q: Sam, whose mass is 71 kg, takes off across level snow on his jet-powered skis. The skis have a…

A: The mass of the person, The applied force, The coefficient of kinetic friction, uk = 0.1

Q: After reading the physics question below, choose one of the answers listed. Water park…

A: Since there is no friction or air resistance present in the given system, the system can be…

Q: In the figure, a 4.2 kg block slides along a track from one level to a higher level after passing…

A:

Q: *A child on a sled has been given a push so that he is moving up a hill. The hill is covered with…

A: Given: mass of child m1=22.7 kgmass of sled m2=3.18 kginitial velocity u = 3.83 m/sangle of…

Q: If his arms are capable of exerting a force of 1250 N on the rope, what is the maximum speed he can…

A: Newton's Second Law of Motion According to Newton's Second Law of motion, the rate of change of…

Q: A 1500 kg car skids to a halt on a wet road where 4 = 0.51. You may want to review (Pages 141 - 145)…

A:

Q: A box of mass 2.0 kg hangs by a cable from the ceiling of an elevator. The elevator is moving up at…

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Q: A vertical spring (ignore its mass), whose spring constant is 870 N/m, is attached to a table and is…

A:

Q: The conveyor belt delivers each 14-kg crate to the ramp at A such that the crate's speed is vA = 2.5…

A: We have to find v

Q: The figure shows a cord attached to a cart that can slide along a frictionless horizontal rail…

A: Change in kinetic energy = ?

Q: Move over Jeff Bezos, this invention is about to make you the richest person in the world. You have…

A: The mass of the OYOY M=94.0 kg The radius of the cylinder: R=0.810 m The radius of the massless…

Density of Solids

The density of a substance refers to how much matter is present in a given amount of space. It is expressed as the ratio of the mass of the substance to its volume.