You should put when you will leave, where you will be, and what time you will get back.
The answer is D No, smaller goals would be better
Answer:
The tension in the rope is 20 N
Solution:
As per the question:
Mass of the object, M = 2 kg
Density of water, 
Density of the object, 
Acceleration due to gravity, g = 
Now,
From the fig.1:
'N' represents the Bouyant force and T represents tension in the rope.
Suppose, the volume of the block be V:
V =
(1)
Also, we know that Bouyant force is given by:

Using eqn (1):


From the fig.1:
N = Mg + T
40 = 2(10) + T
T = 40 - 20 = 20 N
