A hot air balloon exerts a force of 1200 N while
1 answer:
Answer:
C
Explanation:
For the explained scenario in the free body force diagram definitely the two forces 1200 N and 800 N should present as they are the acting forces
So A & D rules out.
Then you must think of B & C.
You also know that the weight of the load is always acting downwards as that force is generated by gravitational field of Earth. So 800 N should be downwards not upwards. That rules out B.
So answer is C
(Free body diagram is shown in the graph)
You might be interested in
Given:
The thermal energy added to the system is Q = 90 J
The work done by the system on the surroundings is W = 30 J
To find the change in internal energy.
Explanation:
According to the first law of thermodynamics, the change in internal energy can be calculated by the formula
On substituting the values, the change in internal energy will be
Final Answer: The chage in internal energy is 60 J (option D)