2,3,5 are correct just took the test
Work or energy spent=force times distance=25N*4m=100Nm
power=energy or work divided by time=100Nm/5s=20Nm/s
The force advantage of the direction changing pulley shown is 1. The correct option is b.
<h3>What is force advantage?</h3>
Force is the mechanical physical quantity. The force advantage is equivalent to the mechanical advantage equal to the ratio of output to the input force.
In the single fixed pulley, there is only one rope segment that pulls up on the load, so,
The force advantage is
F.A = 50 N / 50 N = 1
Thus, the force advantage of the direction changing pulley shown is 1. The correct option is b.
Learn more about force advantage.
brainly.com/question/16558799
#SPJ1
Troposphere is much warmer than the Stratosphere.
<u>Explanation:</u>
- The troposphere is the last and the lowest level of the atmosphere, so it is in close contact with the Earth's surface.
- On the other hand, the stratosphere is located above the troposphere, so it is not in contact with the Earth's surface.
- So from the above discussion, the troposphere is warmer than the stratosphere.
Answer:
Explanation:
As we know that there is no external horizontal force on the cannon ball + performer
So here total momentum of the system must be conserved
so we will have
now from above equation we have