Shown below are seven situations where a student is holding a meter stick at the left end at various angles. A 1.0 kg mass is hung on the meter sticks at different locations. The meterstick is held stationary in all cases. All of the meter sticks are identical, but the distance along the meter stick at which the 1.0 kg mass is hung and the angles at which the student holds the meter stick vary. Specific values are given in each figure. (Ignore the mass of the meter stick.)

Which of the following statements are true about the situations depicted in the figures above?
(Give ALL correct answers: B, AC, BCD.., or None )

A) The torque is the same in pictures A and B
B) The lever arm in picture D is: 0.7L
C) The meterstick is harder to hold in picture F than in picture B
D) The net force acting on the meter stick is the same in all pictures
E) The lever arm is the same in pictures B and C

A person exerts a force of 38N on the end of a door 96cm wide. What is the magnitude of the torque if the force is exerted
(a) perpendicular to the door
and
(b) at a 60.0° angle to the face of the door?
*note: Please explain this in the simplest terms possible for me. Thank you so much :)

If the torque output per phase is proportional to the power input per phase ignoring losses it can be shown that:
Torque is proportional to: sR2/R2^2+(sX2)^2
Then show by differentiating with respect to the slip, s, that maximum torque occurs when: R2=sX2
Please show full workings.

10.8.6. The corner of a rectangular piece of wood is attached to a rod that is free to rotate as shown. The length of the longer side of the rectangle is 4.0 m, which is twice the length of the shorter side. Two equal forces are applied to two of the corners with magnitudes of 22 N. What is the magnitude of the net torque and di

A machinist is using a wrench to loosen a nut. The wrench is 25.0 cm long, and he exerts a 17.0 N force at the end of the handle at 37 degrees (see attachment).
a) What is the magnitude of the torque does the machinist exert about the center of the nut?
b) What is the maximum torque he could exert with this force?

The figure shows a lower leg being exercised (see the attached file). It has a 49-N weight attached to the foot and is extended at an angle with respect to the vertical. Consider a rotational axis at the knee, as indicated. (a) When = 54°, find the magnitude of the torque that the weight creates. (b) At what angle does the m

A cylinder of mass M and radius R is rotated in a uniform V grove (which looks like a rectangular block with an 45-45-90 degree triangular prism cut from the center- that the cylinder rotates in) The cylinder has a constant angular velocity w and a coefficient of friction u with each surface. What torque must be applied to the c

In San Francisco a very simple technique is used to turn around a cable car when it reaches the end of its route. The car rolls onto a turntable, which can rotate about a vertical axis through its center. Then, two people push perpendicularly on the car, one at each end, as in the drawing. The turntable is rotated one-half of a

The drawing shows a jet engine suspended beneath the wing of an airplane. The weight W of the engine is 9600 N and acts as shown in the drawing. In flight the engine produces a thrust T of 62400 N that is parallel to the ground. The rotational axis in the drawing is perpendicular to the plane of the paper. With respect to this a

1. A torque is a product of a force and a distance (lever arm). Work is also the product of a force and a distance. Yet, "torque" and "work" are different. What is it about the distances that make "torque" and "work" different?
2. What is a gyroscope? What does the angular momentum has to do with a gyroscope? Provide examples

A plana loop of area A=0.05m^2 carries a current I=1A. The magnetic field B=0.5T is at angle 45 degrees with the norm to the loop.
1.)What is magnetic moment of the loop.
2.)What torque should be applied to the loop in order to keep it at rest.
3.)What torque would be needed if the loop had 100 turns