Answer:
Explanation:
Torque produced = tangential force x radius
= 290 x .33
= 95.7 N.m
angular acceleration = Torque / moment of inertia
.816 = 95.7 / moment of inertia
moment of inertia = 95.7 / .816
= 117.28 kgm².
Scenes the chair wheels are up the person is rolling backwards and if the wheels were down then the person would go forwards
<span />
Answer:
F = 20 N
Explanation:
It is given that,
The fulcrum is 1 m from the left end, and 3 m from the right end. A block of 60 N is hung to the left end. We need to find the force needed on the right end such that it balances it. The torque acting on the left end is equal to the torque acting on another side. Let F is the force needed on the right end. So,
![60\times 1=F\times 3\\\\F=20\ N](https://tex.z-dn.net/?f=60%5Ctimes%201%3DF%5Ctimes%203%5C%5C%5C%5CF%3D20%5C%20N)
So, the force of 20 N is needed on the right end.
Answer:
28 N
Explanation:
According to Newton's second law of motion
The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force, in the same direction as the net force, and inversely proportional to the mass of the object.
in another form,
Force = mass * acceleration
assuming mass is a constant since considering the same object , we can say
Force ∝ acceleration
![\frac{F_1}{F_2} =\frac{a_1}{a_2}\\ \\\frac{63}{F_2} =\frac{9}{4} \\F_2=28 N](https://tex.z-dn.net/?f=%5Cfrac%7BF_1%7D%7BF_2%7D%20%3D%5Cfrac%7Ba_1%7D%7Ba_2%7D%5C%5C%20%5C%5C%5Cfrac%7B63%7D%7BF_2%7D%20%3D%5Cfrac%7B9%7D%7B4%7D%20%5C%5CF_2%3D28%20N)