Answer:This is the part of the scientific method that tests your hypothesis. An experiment is a tool that you design to find out if your ideas about your topic are right or wrong.
Explanation:
Answer:
300 m/s
Explanation:
As the cylinder drops off so its initial velocity is zero.
h = 4500 m, g = 10 m/s^2, u = 0
Use third equation of motion
v^2 = u^2 + 2 g h
v^2 = 0 + 2 x 10 x 4500
v^2 = 90000
v = 300 m /s
Answer:
Part a)
Part b)
Part c)
Explanation:
Part a)
as we know that angular acceleration of the wheel is given as
now the radius of the wheel is given as
R = 3.21 cm
so the tangential acceleration is given as
Part b)
frequency of the wheel at maximum speed is given as
now we know that
now radial acceleration is given as
Part c)
total angular displacement of the point on rim is given as
here we know that
now angular displacement will be
now the distance moved by the point on the rim is given as
Answer:
Part a)
Part b)
Part c)
Part d)
Part e)
Part f)
Explanation:
Part a)
As we know that the maximum angle deflected by the pendulum is
so the maximum height reached by the pendulum is given as
so we will have
now gravitational potential energy of the pendulum is given as
Part b)
As we know that there is no energy loss while moving upwards after being stuck
so here we can use mechanical energy conservation law
so we have
Part c)
now by momentum conservation we can say
Part d)
Work done by the bullet is equal to the change in kinetic energy of the system
so we have
Part e)
recoil speed of the gun can be calculated by momentum conservation
so we will have
Part f)
Total energy released in the process of shooting of gun
Explanation:
u= 0 ( because car start rest)
v=400
t=3.5
v-u/t
400-0/3.5
400/3.5
114m/s
f= 12000
f=ma
12000=m*114
m=12000/114
105 kg approx