Answer:
Input force is the initial force used to get a machine to begin working. Machines are designed to increase the input force for a larger output force. The quality of a machine is measured by mechanical advantage. The mechanical advantage is the ratio of the output force to the input force.
Explanation:
Answer:
Number 6:
• From the formula of force:
• But we need to get the acceleration, from the first newtons equation of motion
• v is the final velocity, but v is zero because the bullet came to rest.
• u is the initial velocity, u = 350 m/s
• a is the acceleration that we need
• t is the time, t = 0.0018 seconds.
» let's now substitute:
[ negative shows retârdation or deceleration or decrease in speed ]
• Therefore, let's find the force:
mass = 6g = (6/1000) kg = 0.006 kg
A because it is a formula for h*2
Given that,
Mass = 2 kg
Height = 10 m
Speed = 1 m/s
We need to calculate the initial energy
Using formula of potential energy
We need to calculate the final energy
Using formula of kinetic energy
Put the value into the formula
We need to calculate the velocity when it is traveling 3 meters
Using conservation of energy
Put the value into the formula
Hence, The initial and final energy are 196 J and 1 J.
The speed of the particle is 7.76 m/s.