The figure above represents a frictionless pulley system ...
The figure above represents a frictionless pulley system in which a weight W is in equilibrium with a weight of 40N. Find the value of W
13.3N
20.0N
40.0N
80.0N
Correct answer is D
With P1 and P2 as shown (make a V.R of 2), the weight W = 40N * 2 = 80N
Which of the following simple machines is a second class lever? ...
It is easier to roll a barrel full of coal tar than to pull it because ...
Which of the following properties is NOT exhibited by sound waves? ...
A metal rod has a length of 100cm at 200°C. At what temperature will its length be 99.4cm. If th...
What type of motion does the skin of a 'talking' drum perform when it is struck with a drum ...
For which of the following sets are the units fundamental? ...