Feb 20, 2023 Flashcards
1
Q
What is a simple machine?
A
A device that changes the direction or magnitude of force.
2
Q
Mechanical advantage definition
A
F out/F in When a machine makes work easier, than without a machine
3
Q
T or F a cleverly designed machine will do more work than the user puts in
A
False because you cannot get more energy than you put in
4
Q
T or F if an object is traveling in a circle, it must be accelerating
A
T.
5
Q
T or F Einstein hypothesized that effects of uniform gravity and effects of uniform acceleration are indistinguishable.
A
T
6
Q
For an object to be in equilibrium, we need to have
A
- Zero net force
- Zero net torque
