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Both torque and work are products of force and displacement. How are they different? Do they have the same units?

Short Answer

Expert verified

The solution is as follows.

There is simply a magnitude to work, but there is no direction to it.The magnitude and direction of torque are directed in the same direction that a right-handed screw would advance if rotated by the torque

Step by step solution

01

Definition of torque:

The product of force and the perpendicular distance between the point of application of force and the pivot point is defined as torque.

02

Step 2: torque and work are products of force and displacement will be same or different:

Torque is responsible for the rotational effect. It's a quantity that takes the shape of a vector.

Work is a scalar number that results from the product of force and displacement in the direction of the force.

Torque and work are both the result of force and distance. Torque and work share the same units called Newtonmeter or Joule in mathematics.

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Most popular questions from this chapter

2.00mQuestion: The fishing pole in Figure P10.28 makes an angle of20.0o with the horizontal. What is the torque exerted by the fish about an axis perpendicular to the page and passing through the angler’s hand if the fish pulls on the fishing line with a forceF=100Nat an angle37.0o below the horizontal? The force is applied at a point from the angler’s hands.

Question: In a manufacturing process, a large, cylindrical roller is used to flatten material fed beneath it. The diameter of the roller is 1.00m, and, while being driven into rotation around a fixed axis, its angular position is expressed asθ=2.50t2-0.600t3 whereθ is in radians and t is in seconds. (a) Find the maximum angular speed of the roller. (b) What is the maximum tangential speed of a point on the rim of the roller? (c) At what time t should the driving force be removed from the roller so that the roller does not reverse its direction of rotation? (d) Through how many rotations has the roller turned between t=0 and the time found in part (c)?

A particle is located at the vector position r=4.00i^+2.00j^m, and a force exerted on it is given by F=3.00i^+2.00j^N. (a) What is the torque acting on the particle about the origin? (b) Can there be another point about which the torque caused by this force on this particle will be in the opposite direction and half as large in magnitude? (c) Can there be more than one such point? (d) Can such a point lie on the y axis? (e) Can more than one such point lie on the y axis? (f) Determine the position vector of one such point.

Question: A uniform, thin, solid door has height 2.20 m, width 0.870 m, and mass 23.0 kg. (a) Find its moment of inertia for rotation on its hinges. (b) Is any piece of data unnecessary?

A ball having mass mis fastened at the end of a flagpole that is connected to the side of a tall building at point Pas shown in Figure. The length of the flagpole is, and it makes an angle θ with the x-axis. The ball becomes loose and starts to fall with acceleration -gj^. (a) Determine the angular momentum of the ball about point Pas a function of time. (b) For what physical reason does the angular momentum change? (c) What is the rate of change of the angular momentum of the ball about point P?

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