Homework Statement
If a torque of 55N.m is required and the largest force that can be exerted by you is 135N, what is the length of the lever arm that must be used?
Homework Equations
Lever Arm=(r)(sin)
Torque=(Force)(r)(sin)
The Attempt at a Solution
To be honest, I'm stumped
Homework Statement
What is the a.d of each of the following hands of a clock in 1h?
the second and?
the minute hand?
the hour hand?
Homework Equations
That's what I'm looking for
The Attempt at a Solution
I'm having trouble getting it on paper, just a description of how one of...
A librarian lifts a 2.2kg book from the floor to a height of 1.25m. He carries the book 8.0m to the stacks and places the book on a shelf that is 0.35m above the floor. How much work does he do on the book?