The solution to the problem is as follows:
Normal force is m*g plus 240 N*sin30.
<span>30 kg*9.8 m/s^2 + 240 N*sin30 = 414 N
</span>
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Answer:
1600 years half life
3200/1600 is 2 half lifes
first half life takes the sample to 1/2 it's original amount and the second takes it to 1/4 of it's original amount
so 1/4*7gm is 1.75gm
Explanation:
Answer: & Explanation:
small scaled building models are very rare to make/build nowadays.
due to advance technology it is more wiser and more convenient to use 3d programs like revit in creating building model to scale.
so It is always a good idea to make models of your ideas, before deciding on the final design.
This will help you determine whether your idea is going to work or needs modifying. A model allows you to test your solution quickly and cheaply.
Reworking a massive building takes years, millions of pounds, and meticulous planning and project management.
Answer:
Mass=0.305[kg]
Explanation:
The block is located on a surface, where no forces act on it, so it will remain at rest according to Newton's laws.
We can perform an analysis of forces on the y-axis (see the free body diagram) and in order to determine the equation to determine the mass of the body, we must remember that the value of a force influenced by gravity is equal to the product of mass by acceleration.
From this equation we can clear the value of the mass
Answer:
(a)
(b) I =428 
(c)
Explanation:
GIVEN
mass = 18.2 kg
radial arm length = 3.81 m
velocity = 49.8 m/s
mass of arm = 22.6 kg
we know using relation between linear velocity and angular velocity


for angular acceleration, use the following equation.

since 
here for one circle is 2 π radians. therefore for one quarter of a circle is π/2 radians
so for one quarter 

on solving

(b)
For the catapult,
moment of inertia


For the ball,



so total moment of inertia = 428 
(c)

