Simple machines questions | form two Physics

The effort that would be needed to operate a 1200N load with a mchine that has a mechanical advantage of 3 is:
A. 400N
B. 600N
C. 800N
D. 3600N

Answer / Solution

UNSOLVED

The efficiency of a machine is always less than 100% because ______

Answer / Solution

UNSOLVED

In a three pulley system the Velocity Ratio (VR) is given as:
A. 3
B. 6
C. 1/6
D. 1/3

Answer / Solution

UNSOLVED

b) A rigid body which when in use turns about a pivot or fulcrum is called a ____________.
c) A grooved wheel which is free to turn about an axle fixed in a frame is called a _______

Answer / Solution

UNSOLVED

A lever which has its effort between the load and fulcrum is said to be the
A. second class lever.
B. third class lever.
C. first class lever.
D. fourth class lever.

Answer / Solution

UNSOLVED