In order to apply the
most torque to a screw, you should:
use a wrench with a long handle
use a wrench with a short handle
there would be no difference
Two people sit on a seesaw. They sit in positions such that the
seesaw is balanced in a horizontal position. True/False: The two people must weigh the
If an object is in equilibrium:
the net force on it must be zero
the net torque on it must be zero
both of the above
neither of the above
Ralph noticed that both torque and work are
obtained by multiplying a force times a distance. He wants to know: how are they different?
they have the same units? What can you tell Ralph to help him out?
Work is done on an object over a period of time--and over a certain distance having a parallel component--whereas torque is basically a force applied to the object at an instant of time, with the force applied away from the pivot at a given distance (having a perpendicular component). They do have the same units, but represent very different things. Therefore the units of torque are usually written as Nm, whereas the units of energy & work are usually written as J.