Give at least two examples of objects whose centers of gravity are located at a point where no mass exists.

Q: It is easier to turn to turn the steering wheel of a large diameter than that of small diameter.…

A: Torque or turning effect is defined as the force sets the object into rotation about an axis.Write…

Q: In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow…

A: It is given that,

Q: The front wheels of a racing vehicle are located far out in front to help keep the vehicle from…

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Q: The masses below are situated along a line ; consecutive objects are separated by 1 m.  Find the…

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Q: A basketball is being pushed by two players during tip-off. One player exerts an upward force of 15…

A: net torque = upwards torque + downward torque net torque = (15)(0.14) + (11)(0.07)net torque = 2.1 +…

Q: A windshield wiper rotates through a 120° angle as it cleans a windshield. From the point of…

A: Formula of area of sector is as follows: a=12r2θ…

Q: ride in a form of a large vertical cylinder that spins about its axis. When it spins fast enough,…

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Q: A carpenter's square has the shape of an L as shown in the figure below. Locate its center of…

A: Solution:

Q: Masses m = 50, m2 in the figure. 15, m3 = 20, and m are positioned on a weightless beam, with the…

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Q: The County Fair Swing carries the mass of riders and chairs in an unchanging circular path in an…

A: Since the ride is moving in horizontal direction, its acceleration in vertical direction and hence…

Q: What is the weight of the body at the centre of the earth? Will the answer change if the earth were…

A: The weight of the body is depends on the mass of the body and the gravity (g). The mass of the body…

Q: 2- The rotation of a planet around the sun has the following characteristic: O A. It is a constant…

A: As telescope basically work in the principle of the absorption of the electromagnetic wave. Hence…

Q: Why is the wobbly motion of a single star an indication that the star has one or more planets…

A: The center of gravity will be at the geometric center of the star when there is no other planets…

Q: The rotational effect of a force on a body about an axis of rotation is described in terms of: A)…

A: The rotational effect of a force on a body about an axis of rotation is described in terms of Moment…

Q: A 2000 kg satellite is orbiting Earth at a distance of 9.0x106 m away from the Earth's center. The…

A:

Q: A coin C of mass 0.050 kg is placed on a horizontal disk at a distance of 0.20 m from the center, as…

A: A coin C of mass 0.050 kg is placed on a horizontal disk at a distance of 0.20 m from the center, as…

Q: Why doesn't centrifugal force actually exist?

A: There is no centrifugal force exist in outer space and in earth surface.

Q: Calculate the Torque that a child must apply to swing a rock of mass 0.5 kg in a radius 1.16 meters.…

A: mass of rock (m) = 0.5 kg radius (R) = 1.16 m Initial velocity (u) = 0 msfinal velocity (v) = 5…

Q: The figure belovr shovs a human arm that weighs 44.4 N. The arm is extended outard and is…

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Q: The wagon and the girl, shown in the following figure, has a weight of 100 N located at the center…

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Q: You accidentally knock a full bucket of water off the side of the well shown in Figure. The bucket…

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Q: It is easier to roll than to pull a barrel along a road. Explain.

A: When the barrel is pushed or pulled, the friction that exists between the point of contact is…

Q: A 3.2 kg flagpole extends from a wall at an angle of 25° from the horizontal. Its center of gravity…

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Q: Consider the following propositions: A. A person's body weight causes them to rotate. B. The weight…

A: Every object has a fundamental property i.e.mass. Mass is a scalar quantity. Weight is vector…

Q: Why do roads on mountains have inward inclination at sharp turns?

A: When a vehicle moves along a horizontal curved road on a mountain, the necessary centripetal force…

Q: Discuss the relationship between force and the angle of inclination.

A: Expression of force in terms of acceleration due to gravity -  F=mgWhere, m =Massg =Acceleration due…

Q: An astronaut is training in an earthbound centrifuge that consists of a small chamber whirled…

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Q: 8. Determine the torques about the elbow and shoulder produced by the 20.0 N weight in the…

A: Given,  Force = 20.0 N  Distance for shoulder = 28cm + 23cm + 6cm = 57cm =0.57 m  Distance for elbow…

Q: here is the center of gravity for these masses? Express your answer as a number and include one…

A: According to question we need to find centre of gravity?

Q: A model airplane with mass 750g is tethered by a wire so that it flies in a circle 30.0 m in radius.…

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Q: When a moving car encounters a patch of ice the brakes are applied. Why is it desirable to keep the…

A: Static friction is greater than kinetic friction because it takes more energy to move the static…

Q: There are two propellers in a helicopter. Why?

A: If only one motor is mounted on helicopter then helicopter will turn in opposite direction for…

Q: A small ball of mass0.75 kg is attached to one endof a 1.25-m-long massless rod, and the other end…

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Q: A satellite is to be completely despin using a two mass's Yo-Yo device with tangential release.…

A: The radius of the spacecraft is, r=d2=240 cm2=120 cm0.01 m1 cm=1.2 m The velocity of the Yo Yo…

Q: In a judo foot-sweepmove, you sweep your opponent’sleft foot out from under him whilepulling on his…

A: a)  The value of horizontal force, Fa = 0 The expression of the torque,

Q: Mass of plane: 22,000 kg Tension, T: 400 N Determine the reactions at A and each of the two wheels…

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Q: Find the center of gravity for the distribution of masses (red circle) given as in the figure? Where…

A: The value of the acceleration due to gravity is the same for all the masses.

Q: A satellite in a geosynchronous circular orbit is 42,164.0 km from the center of Earth. A small…

A: According to conservation of angular momentum is, the initial angular momentum is equal to the final…

Q: Why is centrifugal force in a rotating frame called a 'fictitious force'?

A: The centrifugal force is also called as fictitious force or pseudo force in Newtonian mechanics.

Q: A cube with side length a = 80 cm and made out of concrete ( density of 1.8 · 10 kg/m³ ) should be…

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Q: You sit at the middle of a large turntable at an amusement park as it is set spinning and then…

A: When we crawl toward the edge of the turntable, the rotational inertia of the system is increased…

Q: What are the three reasons not to include such an outward force, called centrifugal force?

A: The three reasons not to include such an outward force called centrifugal force is. Centrifugal…